zinc

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Symbol:

Zn

Atomic Number:

30

Relative Atomic Mass:

65.39 g mol^-1

Natural Abundance in Lithosphere, hydrosphere and atmosphere:

0.01% (mass fraction)

Electron Configuration:

[Ar]3d¹⁰4s²

Oxidation States:

II

Atomic Radius:

133.5pm

Covalent Radius:

125pm

Ionic Radius:

60pm (for +2 oxidation state, 4 coordinate)

73pm (for +2 oxidation state, 6 coordinate)

Melting Point:

419.6°C

Density:

7.14 g cm^-3 (at 20°C)

First Ionisation Energy:

9.394 eV

Reduction Potential:

-0.762V

for Zn²⁺ + 2e^- a Zn_(s)

Electronegativity (Allred and Rochow):

1.7

Number of Natural Isotopes:

5

Mass Number of the Most Abundant Isotopes:

64 g mol^-1 a 48.6% abundance

66 g mol^-1 a 27.9% abundance

68 g mol^-1 a 18.8% abundance