mercury

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Symbol:

Hg

Atomic Number:

80

Relative Atomic Mass:

200.59 g mol^-1

Natural Abundance in Lithosphere, hydrosphere and atmosphere:

4 x 10^-5% (mass fraction)

Electron Configuration:

[Xe]4f¹⁴5d¹⁰6s²

Oxidation States:

II, I

Atomic Radius:

150.3pm

Covalent Radius:

144pm

Ionic Radius:

96pm (for +2 oxidation state)

119pm (for +1 oxidation state)

Boiling Point:

356.6°C

Density:

13.55 g cm^-3 (at 20°C)

First Ionisation Energy:

10.437 eV

Reduction Potential:

0.851V

for Hg²⁺ + 2e^- a Hg_(s)

Electronegativity (Allred and Rochow):

1.5

Number of Natural Isotopes:

7

Mass Number of the Most Abundant Isotopes:

199 g mol^-1 a 16.9% abundance

200 g mol^-1 a 23.1% abundance

202 g mol^-1 a 29.9% abundance