Americium (Am) Properties and Facts

Element 95 - Actinide

What are the basic properties of Americium?

Americium (symbol: Am) is a actinide with atomic number 95. Its atomic mass is 243.0 u, and it belongs to period 7 and group 3.

What is the electron configuration of Americium?

The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f⁷ 5s² 5p⁶ 6s²

What are the physical properties of Americium?

Melting point: 1449.0 K
Boiling point: 2880.0 K
Density: 13.7 g/cm³

What are the known isotopes of Americium?

  • Am-241: Half-life of 432.2 years
  • Am-242: Half-life of 16 hours
  • Am-243: Half-life of 7370 years
  • Am-244: Half-life of 10.1 hours
  • Am-245: Half-life of 2.05 hours

What is the biological role and occurrence of Americium?

Biological role: Highly radioactive and toxic
Natural occurrence: Synthetic element

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