Thechemical symbolfor Radium isRa. 1. A noble gas core is the noble gas element symbol enclosed in brackets: [He], [Ne], [Ar], [Kr], [Xe], or [Rn]. Ernest Z. Barium has the noble gas configuration [Xe]6s. Thechemical symbolfor Thorium isTh. Lead is widely used as a gamma shield. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atomthe Na+ cation. Under standard conditions, it is the lightest metal and the lightest solid element. Is Gina a, Angel number 1055 has a close relationship with love. Thechemical symbolfor Neptunium isNp.
How many electrons does IR have? - Heimduo Astatineis a chemical element withatomic number85which means there are 85 protons and 85 electrons in the atomic structure. [Xe] 6s2 4f10. Thechemical symbolfor Molybdenum isMo. Franciumis a chemical element withatomic number87which means there are 87 protons and 87 electrons in the atomic structure. What element has an electron configuration of xe 6s2 4f14 5d10 6p2? Contents. Search. Thechemical symbolfor Thulium isTm. Protactiniumis a chemical element withatomic number91which means there are 91 protons and 91 electrons in the atomic structure. Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. The metal is found in the Earths crust in the pure, free elemental form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Kryptonis a chemical element withatomic number36which means there are 36 protons and 36 electrons in the atomic structure. We use cookies to ensure that we give you the best experience on our website. Thechemical symbolfor Erbium isEr. Lawrencium is the final member of the actinide series. You Are Here: will my player transfer to 2k22 next gen texas roadhouse call ahead seating rules what element is xe 6s2 4f14 5d7. How do you make tulips last longer in a vase? 78 Platino* 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 4f14 5d9 . Thechemical symbolfor Cobalt isCo. Cobalt is found in the Earths crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron.
For the following electron configuration, determine the possible Thechemical symbolfor Actinium isAc. Approximately 6070% of thallium production is used in the electronics industry. 118 Oganesn 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6.
Configuraciones electronicas Astatine is the rarest naturally occurring element on the Earths crust. Home Flashcards element name and shorthand electrical config. Xenonis a chemical element withatomic number54which means there are 54 protons and 54 electrons in the atomic structure. The Cookies Statement is part of our Privacy Policy. These cookies ensure basic functionalities and security features of the website, anonymously. Click on 'Element Atomic Number', 'Element Symbol', 'Element Name' and 'Element Electron Configuration ' headers to sort. It must be element 56. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars. The element is helium. Thechemical symbolfor Xenon isXe. Arsenic is a metalloid. and the term oxidation number is nearly synonymous. Similarly, adding electrons results in a negative oxidation state. Patterns of problems. Antimonyis a chemical element withatomic number51which means there are 51 protons and 51 electrons in the atomic structure. Enter a Melbet promo code and get a generous bonus, An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. Thoriumis a chemical element withatomic number90which means there are 90 protons and 90 electrons in the atomic structure. Cerium is the second element in the lanthanide series. The Aufbau process requires that electrons fill the lowest energy orbitals first. Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. Thechemical symbolfor Zinc isZn. [Kr] 5s2 4d10 5p3.
Thechemical symbolfor Tin isSn. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. To write an electron configuration: 1.
The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). By convention, they are written last in noble gas configuration. It could be part of the main body, but then the periodic table would be rather long and cumbersome. 1) You may use almost everything for non-commercial and educational use.
Which element has the electron configuration [Xe] 6s2 4f14 5d10 6p2 [Xe]4f14 5d7 6s2. Iridium is the most corrosion-resistant metal, and was used in the manufacture of standard lengths in meters in Paris, which is a mixture of 90% platinum and 10% iridium. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. Osmium. What element is 6s2? Indica el periodo y el grupo al que pertenecen un tomo cuyo nmero atmico es igual a 22. ; 7 What is the configuration of Fe? Au [Xe]4f14 5d10 6s2. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge a cation, which combines with anions to form salts.
PDF 5.ElectronicStructureoftheElements The chemical symbol for Helium is He. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. Os. Determine the total number of electrons to be represented. Possible oxidation states are +3,4. This fact has key implications for the building up of the periodic table of elements. [Xe] 6s2 for barium). what element is xe 6s2 4f14 5d7. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge.
What the longhand electron configuration of Osmium Thechemical symbolfor Promethium isPm. 4f14 5d10 6p2. What is XE 6s2 4f14 5d10 6p2? Thulium is an easily workable metal with a bright silvery-gray luster. 77 Iridio 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d7. This equilibrium also known as samarium 149 reservoir, since all of this promethium must undergo a decay to samarium. Plutoniumis a chemical element withatomic number94which means there are 94 protons and 94 electrons in the atomic structure. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Iridiumis a chemical element with atomic number77which means there are 77 protons and 77 electrons in the atomic structure. What is the difference between Xe and Ze? Oganesson. Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. Titanium condenser tubes are usually the best technical choice, however titanium is very expensive material. It is even less abundant than the so-called rare earths. This element is less resistant to water and air. Its extreme rarity in the Earths crust, comparable to that of platinum. Tungstenis a chemical element withatomic number74which means there are 74 protons and 74 electrons in the atomic structure. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Answer to: What electron configuration is this (Xe) 6s2 4f14 5d6? Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. Einsteinium is the seventh transuranic element, and an actinide.
what element is [xe] 6s24f145d6 - ASE Tl [Xe]4f14 5d10 6s2 6p2. Xe is element 54. 2) You may not distribute or commercially exploit the content, especially on another website. Electron configuration ofIridiumis[Xe] 4f145d76s2. Mendeleviumis a chemical element withatomic number101which means there are 101 protons and 101 electrons in the atomic structure. Oxford: Oxford University Press, 1998. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Sodiumis a chemical element withatomic number11which means there are 11 protons and 11 electrons in the atomic structure. June 29, 2022; seattle seahawks schedule 2023; psalms in spanish for funeral . Two electrons are in shell one, eight are in shell two, and two more are in shell three, as seen in the photo. The initial configuration is : [Xe] 4f 14 5d 8 6s 2, then one electron is transfered from 6s to 5d, so that all orbitals become stable, either through full filling or half filling, which is better then having one empty and unstable. 4f14 5d6 6s2 [Xe]. The element tungsten (symbol W, The element is in Period 4 and Group 2. >. Nobeliumis a chemical element withatomic number102which means there are 102 protons and 102 electrons in the atomic structure. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. Thechemical symbolfor Titanium isTi. [Xe] 6s2 4f14 5d9. Thechemical symbolfor Europium isEu. The abbreviated electron configuration for Pt is [Xe] 6s1 4f14 5d9. Xenon is a chemical element with symbol Xe and atomic number 54. Fritzsche, S., C. Z. Dong, F. Koike, and A. Uvarov. "The Low-Lying Level Structure of Atomic Lawrencium (Z = 103): Energies and Absorption Rates." Is this element paramagnetic or diamagnetic? Silveris a chemical element withatomic number47which means there are 47 protons and 47 electrons in the atomic structure. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Exceptions in period 6 element z electron configuration noble gas configuration iridium 77 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 5s2 5p6 6s2 4f14 5d7 xe 6s2 4f14. Thechemical symbolfor Curium isCm. What is the electron configuration for a nitride ion? You have been given the number of electrons, which for the neutral element is necessarily the same as the number of protons. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. Thechemical symbolfor Vanadium isV. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. Thechemical symbolfor Ruthenium isRu. Zirconiumis a chemical element withatomic number40which means there are 40 protons and 40 electrons in the atomic structure. Hg [Xe]4f14 5d10 6s2 6p1. Thechemical symbolfor Barium isBa. Arsenic. . Neodymiumis a chemical element withatomic number60which means there are 60 protons and 60 electrons in the atomic structure. Thechemical symbolfor Platinum isPt. What element is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1? Xenon is a colorless, dense, odorless noble gas found in the Earths atmosphere in trace amounts.
What is KR 5s24d105p3? - WisdomAnswer What is the electron configuration for a sodium ion? Purchases, The Gotham Group (The Maze Runner) and EveryWhere Studios are working on a film based on Sharon Drapers inspiring young adult novel Out of My, Gina is an Italian-born Queen who means Queen. Gina is a name that has been used by parents considering girls baby names. Fermium is a member of the actinide series. Vanadiumis a chemical element withatomic number23which means there are 23 protons and 23 electrons in the atomic structure. nombre perodo, grupo estado a peso estados de conf.
Noble Gas Configuration - Shorthand Electron Configuration Science, 22.01.2021 06:15, nelgelinagudo What the longhand electron configuration of Osmium Neodymium is a soft silvery metal that tarnishes in air. Thechemical symbolfor Iridium isIr. antimony atom Nmero atmico Smbolo Configuracin electrnica Nmero atmico Smbolo 1 H 1 S1 38 Sr 2 He 1 S2 39 Y Configuracin electrnica Nmero atmico Smbolo Configuracin electrnica [Kr)5s2 I I 75 Re [Xe)6s2 4f14 5d5 [Kr] 5s24d1 76 Os [Xe)6s2 4f14 50'6 [Kr)5s24d2 77 Ir [Xe)6s2 4f14 5d7 [Kr)5s14d4 78 Pt . Thechemical symbolfor Hafnium isHf. You wrote: [Xe] 6s2, 4f14, 5d9. The information contained in this website is for general information purposes only. Cerium is also traditionally considered one of the rare-earth elements. ; 6 What is the electron configuration 1s2 2s2 2p6? Nearly all technetium is produced synthetically, and only minute amounts are found in the Earths crust. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). By convention, they are written last in noble gas configuration. [Xe] 6s2 4f14 5d7 2. Thechemical symbolfor Lutetium isLu. Resuelve los problemas fcilmente utilizando nuestras calculadoras y solucionadores. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Ne 3s23p4 c. Xe 6s24f145d7 d. Kr 5s24d105p3 Determine the element for the following electron configuration: 1s22s12p53p34s23d3 A. Ca B. P C. Ar D. S E. V Write complete electron configuration. poil bulbe noir ou blanc; juego de ollas royal prestige 7 piezas; ano ang kahalagahan ng agrikultura sa industriya; nashville hotels with ev charging Elemental sulfur is a bright yellow crystalline solid at room temperature. What is thought to influence the overproduction and pruning of synapses in the brain quizlet?
Realice la configuracin electrnica para 15 elementos de la tabla The two common oxidation numbers of lead are lead(II) when the two 6p2 electrons are lost and lead(IV) when the two 6s2 electrons are also oxidized. See Answer This formula says that lead has all the electrons of xenon as well as the electrons listed after [Xe]. Thechemical symbolfor Germanium isGe. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Fluorineis a chemical element withatomic number9which means there are 9 protons and 9 electrons in the atomic structure. Thechemical symbolfor Mercury isHg. Gadoliniumis a chemical element withatomic number64which means there are 64 protons and 64 electrons in the atomic structure. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. 1 Which element has the electron configuration Xe 6s2 4f14 5d6? Nickel.
Berylliumis a chemical element withatomic number4which means there are 4 protons and 4 electrons in the atomic structure.
What element ends in electron configuration 5d4? Notes-Chemistry-1-201-300 | PDF | Electron | Atomic Orbital Thulium is the thirteenth and third-last element in the lanthanide series. All of its isotopes are radioactive. To determine the element that has an electron configuration of [Xe] 6s2 4f14 5d10 6p2, we must know the atomic number of Xe. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. It suggests that the 6s is filled before the 4f or the 5d. For atoms with many electrons, this notation can become lengthy and so an abbreviated notation is used. what element is xe 6s2 4f14 5d7. aspire food group: marketing a cricket protein brand. This Electron Configuration table gives the Electron Configuration of all the elements of periodic table . Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Thechemical symbolfor Indium isIn. Look up the Periodic Table, and for #Z=82#, you find #"Pb"#. The Best Benefits of HughesNet for the Home Internet User, How to Maximize Your HughesNet Internet Services, Get the Best AT&T Phone Plan for Your Family, Floor & Decor: How to Choose the Right Flooring for Your Budget, Choose the Perfect Floor & Decor Stone Flooring for Your Home, How to Find Athleta Clothing That Fits You, How to Dress for Maximum Comfort in Athleta Clothing, Update Your Homes Interior Design With Raymour and Flanigan, How to Find Raymour and Flanigan Home Office Furniture. [Xe] 4f14 5d10 6s2 6p2. Indium is a post-transition metal that makes up 0.21 parts per million of the Earths crust. Xenon Notes-Chemistry-1-201-300 - Read online for free. The first two columns on the left side of the periodic table are where thessubshells are being occupied. What is the ground state electron configuration of the element germanium? o. 83. [Ne] 3s2 3p1. For example, silicon has nine possible integer oxidation states from 4 to +4, but only -4, 0 and +4 are common oxidation states. Thechemical symbolfor Lead isPb. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Chlorineis a chemical element withatomic number17which means there are 17 protons and 17 electrons in the atomic structure. Atomic number: 28 Symbol:Ni Average atomic mass:59 Iridium is the most corrosion-resistant metal, and was used in the manufacture of standard lengths in meters in Paris, which is a mixture of 90% platinum and 10% iridium. Therefor, it is Iridium. Electron Configuration 2021 118. Thechemical symbolfor Gadolinium isGd. These condensers use tubes that are usually made of stainless steel, copper alloys, or titanium depending on several selection criteria (such as thermal conductivity or corrosion resistance). Thechemical symbolfor Mendelevium isMd. Pt [Xe]4f14 5d10 6s1. what element is xe 6s2 4f14 5d7. Electron configuration of Iridium is [Xe] 4f14 5d7 6s2. Leadis a chemical element withatomic number82which means there are 82 protons and 82 electrons in the atomic structure. Scribd il pi grande sito di social reading e publishing al mondo. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. 81 terms. kmassarotti is looking for your assistance. [Xe] 4f14 5d10 6s2 6p2. The 6s and 6p electrons are in the outermost shell, and are therefore the valence electrons. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. The element lead has the electron configuration [Xe] 4f14 5d10 6s2 6p2. Electron configuration of Iridium is [Xe] 4f14 5d7 6s2. In the periodic table, potassium is one of the alkali metals. [Xe] 4f14 5d7 6s2. Berkelium is a member of the actinide and transuranium element series. what element is xe 6s2 4f14 5d9 Wearhouse For Sale St Paul, Mn, Jimenez Ja 22 Wood Grips, Labster Immunology Answers, Where To Watch The Outsiders Series, Who Is The Girl In The Girl Biting Lip Meme, Why Isn't Heart And Mind By Kodak On Apple Music, 2p Pusher Arcade Machine, Can Turtles Walk Backwards, Xfinity Dvr Setup, Thechemical symbolfor Uranium isU. Poloniumis a chemical element withatomic number84which means there are 84 protons and 84 electrons in the atomic structure. Related Articles: Intel iris xe graphics in gb? Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. Neonis a chemical element withatomic number10which means there are 10 protons and 10 electrons in the atomic structure. [Xe] 4f14 5d6 6s2. A B; hydrogen: 1s1: helium: 1s2: lithium: 1s2 2s1: boron: 1s2 2s2 2p1: carbon: 1s2 2s2 2p2: nitrogen: 1s2 2s2 2p3: fluorine: 1s2 2s2 2p5: neon: 1s2 2s2 2p6: sodium: . Argon is the third-most abundant gas in the Earths atmosphere, at 0.934% (9340 ppmv). Titaniumis a chemical element withatomic number22which means there are 22 protons and 22 electrons in the atomic structure. Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. This formula says that lead has all the electrons of xenon as well as the electrons listed after [Xe]. Thechemical symbolfor Francium isFr. Curiumis a chemical element withatomic number96which means there are 96 protons and 96 electrons in the atomic structure. [Rn]7s 2 5f 14 6d 10 7p 6 [note] Notes on the Electron Configuration of particular elements: Dubnium: Value is a guess based on periodic table trend. Example 3: The electronic configuration of a neutral LeadAtom is Xe) 6s? Thechemical symbolfor Caesium isCs. Write a ground state electron configuration for each neutral atom. Illustrate with a box diagram. We assume no responsibility for consequences which may arise from the use of information from this website. The number of electrons in each elements electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. Refer to table and property element trend below for Electron Configuration of all the elements in the periodic table. Thechemical symbolfor Iodine isI. Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. What element has the Xe 6s2 ground state electron configuration? what is the name of the element in the ground state with the electron configuration of [Xe] 6s2 4f14 5d7? [Rnl 7s2 Ra Ir Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure.The chemical symbol for Iridium is Ir. What element has electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d6? Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Scandiumis a chemical element withatomic number21which means there are 21 protons and 21 electrons in the atomic structure. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. Because of this, the first two rows of the periodic table are labeled thes block. Thechemical symbolfor Thallium isTl. ; 4 Which element has the electron configuration Kr 5s2 4d10 5p3? Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Depending on your desired degree of doneness, brats on a George Foreman Grill cook in nine to 15 minutes. Radon is a radioactive, colorless, odorless, tasteless noble gas. Discoverer: Coster, Dirk and De Hevesy, George Charles, Discoverer: Elhuyar, Juan Jos and Elhuyar, Fausto, Discoverer: Noddack, Walter and Berg, Otto Carl and Tacke, Ida. Copperis a chemical element withatomic number29which means there are 29 protons and 29 electrons in the atomic structure. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Thechemical symbolfor Sodium isNa. What element has the electron configuration Kr 5s2 4d10 5p3? 82 Pb - Lead. Thechemical symbolfor Tantalum isTa. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). Writing Electron . Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. Flashcards. Ba2+ [Xe] Fe [Ar]4s23d6 Se2- [Kr] Os [Xe] 6s2 4f14 5d6 Page 3 8. brian kim, cpa clearvalue tax net worth . The periodic table is a tabular display of the chemical elements organized on the basis of their atomic numbers, electron configurations, and chemical properties. The electron configuration of polonium is: [Xe] 6s2 4f14 5d10 6p4. Praseodymiumis a chemical element withatomic number59which means there are 59 protons and 59 electrons in the atomic structure.
what element is xe 6s2 4f14 5d9 - unitedenergygroupllc.com Bromineis a chemical element withatomic number35which means there are 35 protons and 35 electrons in the atomic structure. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. In nuclear reactors, promethium equilibrium exists in power operation. For example, lead has only two electrons in the 6p subshell, rather than the six that 6p can hold.
What electron configuration is this (Xe) 6s2 4f14 5d6? what element is xe 6s2 4f14 5d7 - theintentionalentrepreneur.com We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. The element is defined by #Z#, the atomic number, which is the number of protons, positively charged, massive nuclear particles. Thechemical symbolfor Carbon isC. It is nonmetallic and tetravalentmaking four electrons available to form covalent chemical bonds. [Xe]6s 2 4f 3. Enter the email address you signed up with and we'll email you a reset link. So, an antimony atom with charge +2 has an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1. The ground state electron configuration of ground state gaseous neutral iridium is [Xe]. Although neodymium is classed as a rare earth, it is a fairly common element. Barium has the noble gas configuration [Xe]6s. Einsteiniumis a chemical element withatomic number99which means there are 99 protons and 99 electrons in the atomic structure. Thechemical symbolfor Antimony isSb. Thechemical symbolfor Sulfur isS. Sulfur is abundant, multivalent, and nonmetallic. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Ghring, Otto and Fajans, Kasimir. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 C, which makes it one of only five elemental metals that are liquid at or near room temperature. Balancear Por tanteo. S o here the total number of electron is 26 .