polonium

| Introduction | History | Other Periodic Tables | Back |

Symbol:

Po

Atomic Number:

84

Relative Atomic Mass:

208.9824 g mol^-1

Natural Abundance in Lithosphere, hydrosphere and atmosphere:

2 x 10^-14% (mass fraction)

Electron Configuration:

[Xe]4f¹⁴5d¹⁰6s²6p⁴

Oxidation States:

VI, IV, II

Atomic Radius:

167.3pm

Covalent Radius:

146pm

Ionic Radius:

67pm (for +6 oxidation state)

94pm (for +4 oxidation state)

Melting Point:

254°C

Density:

9.20 g cm^-3 (at 20°C)

First Ionisation Energy:

8.42 eV

Electronegativity (Allred and Rochow):

1.8

Number of Natural Isotopes:

7