Hassium Hs (Element 108) of Periodic Table

108 Hs (Hassium)

Appearance – silvery

Mass number – 265

Atomic weight – 269 g/mol

Atomic number – 108

Electrons: 108

Protons: 108

Neutrons: 157

Group – 8

Periodic – 7

Block – d

Appearance – Highly radioactive metal

Half life(s) – 4000

Lifetime (s) – 5000

Element category – Transition Metal

Electrons per shell – K2, L8, M18, N32, O32, P14, Q2

Electron configuration – 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶5f¹⁴6d⁶7s²

Phase – solid

Density – 41 g/cm³

Oxidation states – 8, 6, 5, 4, 3, 2

Ionization energies – 1st: 733.3 kJ/mol, 2nd: 1756 kJ/mol, 3rd: 2827 kJ/mol

Atomic radius – 126 pm

Covalent radius – 134 pm

Crystal structure – Hexagonal close-packed

CAS Number – 54037-57-9

Naming – After Hassia (a Germany state)

Discovery – GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany (1984)

Isotopes – 277_Hs 271_Hs 270_Hs 269_Hs

Uses – At present it is only used in research.

Natural abundance –  It is created by bombarding lead with iron atoms

#Hassium

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