lithium

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Symbol:

Li

Atomic Number:

3

Relative Atomic Mass:

6.941 g mol^-1

Natural Abundance in Lithosphere, hydrosphere and atmosphere:

6 x 10^-3% (mass fraction)

Electron Configuration:

[He]2s

Oxidation States:

I

Atomic Radius:

152pm

Covalent Radius:

123pm

Ionic Radius:

59pm (for +1 oxidation state, 4 coordinate)

76pm (for +1 oxidation state, 6 coordinate)

Melting Point:

180.5°C

Density:

0.53 g cm^-3 (at 20°C)

First Ionisation Energy:

5.392 eV

Reduction Potential:

-3.04V

for Li⁺ + e^- a Li_(s)

Electronegativity (Allred and Rochow):

1.0

Number of Natural Isotopes:

2

Mass Number of the Most Abundant Isotopes:

6 g mol^-1 a 7.5% abundance

7 g mol^-1 a 92.5% abundance