Atomic Number (# of protons)

10

Mass (amu)

20.18

Density

0.90 g/liter (0⁰C, 1 atm)

Electron Configuration

1s²2s²p⁶

Oxidation States (bold = most stable)

Not Available

Atomic Radius (pm)

Not Available

Ionic Radius (pm)

Not Available

Electronegativity

Not Available

Melting Point (⁰C, 1 atm)

-249

Electron Affinity (eV)

Not Stable

Boiling Point(⁰C, 1 atm)

-246

1^st Ionization energy (eV)

21.57

Enthalpy of Fusion (kJ/mole)

0.33

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

1.71

3^rd Ionization Energy (eV)

Specific Heat Capacity ( J/ (g K), 25⁰C, 1 atm)

1.03