Nobelium (No) Properties and Facts

Element 102 - Actinide

What are the basic properties of Nobelium?

Nobelium (symbol: No) is a actinide with atomic number 102. Its atomic mass is 259.0 u, and it belongs to period 7 and group 3.

What is the electron configuration of Nobelium?

The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 6s²

What are the physical properties of Nobelium?

Melting point: 1100.0 K
Boiling point: 1100.0 K
Density: 9.9 g/cm³

What are the known isotopes of Nobelium?

  • No-259: Half-life of 58 minutes
  • No-260: Half-life of 2.7 minutes
  • No-261: Half-life of 1.3 minutes
  • No-262: Half-life of 1.5 minutes
  • No-263: Half-life of 20 seconds

What is the biological role and occurrence of Nobelium?

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

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