Atomic Number (# of protons)

8

Mass (amu)

16.00

Density

1.43 g/liter (0⁰C, 1 atm)

Electron Configuration

1s²2s²p⁴

Oxidation States (bold = most stable)

-2

Atomic Radius (pm)

74

Ionic Radius (pm)

(-2)140

Electronegativity

3.5

Melting Point (⁰C, 1 atm)

-219

Electron Affinity (eV)

1.46

Boiling Point(⁰C, 1 atm)

-183

1^st Ionization energy (eV)

13.62

Enthalpy of Fusion (kJ/mole)

0.22

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

3.41

3^rd Ionization Energy (eV)

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

0.918