Atomic Number (# of protons)

15

Mass (amu)

30.97

Density

1.82 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Ne]3s²p³

Oxidation States (bold = most stable)

+3,-3,5,4

Atomic Radius (pm)

110

Ionic Radius (pm)

(+5)17

Electronegativity

2.1

Melting Point (⁰C, 1 atm)

44

Electron Affinity (eV)

0.75

Boiling Point(⁰C, 1 atm)

280

1^st Ionization energy (eV)

10.49

Enthalpy of Fusion (kJ/mole)

0.63

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

12.43

3^rd Ionization Energy (eV)

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

0.77