cesium — Cs

The chemical element cesium is an element of type Alkali metal with the symbol Cs. It has an atomic mass of 132.90545196 u and an electronic configuration of [Xe] 6s1.
Synthétique Radioactif Liquide Gaz

28.4°
690°

132.90545196

2
8
18
18
8
1

[Xe] 6s1

0.79

3.8939

Electronic configuration diagram

characteristics

Atomic number: 55
Atomic mass: 132.90545196
Symbol: Cs
Melting point: 28.4
Boiling point: 690
Density: 1.873
Period: 6
Group: 1
Discovery: 1860 Bunsen and Kirchoff
Abundance: 3
Radius: 3.3
Electronegativity: 0.79
Ionization: 3.8939
Isotope: 22
Electronic configuration: [Xe] 6s1
Oxidation state: 1
Electron: 2,8,18,18,8,1

Cesium is a group 1 metal of the periodic table. Its chemical element is Cs and it has an atomic number of 55. Its atomic mass is 132.905 g/mol and its melting point is 28°C, which makes it very malleable and gives it a very low density. It has a silver color and glows in the dark, earning it the nickname "shiny metal". cesium has very high reactive properties. It reacts very easily with oxygen and water and can even react with copper at room temperature. It is very widely used in industry as a catalyst in chemical processes, especially during the production of petroleum products. From a medical point of view, cesium is used to treat various diseases, including cancer and Parkinson's disease. It is also used as a base chemical in the manufacture of drugs and pharmaceutical compounds. cesium is also used in the electronics industry because of its conductive properties and its ability to produce alpha particles. It is widely used in the manufacture of diodes, transistors and integrated circuits. cesium is also used in halogen lamps and works of art, where it is used for its exceptional thermal and galvanic properties. Metallurgy and the aerospace industry also use cesium for its mechanical and electrochemical properties.

Minerals containing cesium

first name	Hardness	Density	Chemical formula
Avogadrite	—	2.62	KBF₄
Caesiumpharmacosiderite	—	0.00	CsFe₄[(AsO₄)₃(OH)₄]Â·4H₂O
Cesiodymite	—	0.00	CsKCu₅O(SO₄)₅
Cesplumtantite	—	6.00	Cs₂Pb₃Ta₈O₂₄
Dachiardite-Ca	—	2.14	Ca₂(Si₂₀Al₄)O₄₈Â·13H₂O
Gainesite	—	2.94	Na₂(Be,Li)Zr₂(PO₄)₄Â·1.5H₂O
Galkhaite	—	5.40	(Hg₅Cu)CsAs₄S₁₂
Kirchhoffite	—	3.64	CsBSi₂O₆
Kupletskite-(Cs)	—	3.68	Cs₂NaMn²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄F
Londonite	—	3.34	CsBe₅Al₄B₁₁O₂₈
Margaritasite	—	5.40	Cs₂(UO₂)₂(VO₄)₂Â·H₂O
Mccrillisite	—	3.12	NaCs(Be,Li)Zr₂(PO₄)₄Â·1-2H₂O
Mendeleevite-(Ce)	—	0.00	(Cs)₆(Cs)₆(K)₆(Ce,Ca)₃₀(Si₇₀O₁₇₅)(H₂O,OH,F)₃₅
Mendeleevite-(Nd)	—	3.16	Cs₆[(Nd,REE)₂₃Ca₇](Si₇₀O₁₇₅)(OH,F)₁₉(H₂O)₁₆
Nalivkinite	—	3.29	Li₂NaFe²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄F
Nanpingite	—	3.11	CsAl₂(Si₃Al)O₁₀(OH)₂
Natrobistantite	—	6.10	NaBi(Ta,Nb,Sb)₄(O,OH)₁₂
Odigitriaite	—	2.83	CsNa₅Ca₅[Si₁₄B₂O₃₈]F₂
Pautovite	—	3.85	CsFe₂S₃
Pezzottaite	—	2.97	CsLiBe₂Al₂Si₆O₁₈
Pollucite	—	2.90	Cs(Si₂Al)O₆Â·nH₂O
Potassicmendeleevite-(Ce)	—	0.00	Cs₆K₆(Ce₂₂Ca₆)(Si₇₀O₁₇₅)(OH,F)₂₀Â·15H₂O
Ramanite-(Cs)	—	0.00	CsB₅O₆(OH)₄Â·2H₂O
Rhodizite	—	3.44	KBe₄Al₄(B₁₁Be)O₂₈
Senkevichite	—	3.13	CsKNaCa₂TiOSi₇O₁₈(OH)
Sokolovaite	—	0.00	CsLi₂AlSi₄O₁₀F₂
Telyushenkoite	—	2.73	CsNa₆Be₂Al₃Si₁₅O₃₉F₂
Zeravshanite	—	3.09	Na₂Cs₄Zr₃Si₁₈O₄₅Â·2H₂O