Question

what is the atomic number of ceseum

Answer 1

Hey,

Atomic number of caesium is 55.

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Answer 2

Hi

Basic Information

Name: Cesium  

Symbol: Cs  

Atomic Number: 55  

Atomic Mass: 132.90546 amu  

Melting Point: 28.5 °C (301.65 K, 83.3 °F)  

Boiling Point: 678.4 °C (951.55005 K, 1253.12 °F)  

Number of Protons/Electrons: 55  

Number of Neutrons: 78  

Classification: Alkali Metal  

Crystal Structure: Cubic

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