On The Move

Atomic number

9

Atomic mass

18.998403 g.mol-1

Electronegativity according to Pauling

4

Density

1.8*10-3 g.cm-3at 20°C

Melting point

-219.6 °C

Boiling point

-188 °C

Vanderwaals radius

0.135 nm

Ionic radius

0.136 nm (-1) ; 0.007 (+7)

Isotopes

2

Electronic shell

[ He ] 2s22p5

Energy of first ionisation

1680.6 kJ.mol -1

Energy of second ionisation

3134 kJ.mol -1

Energy of third ionisation

6050 kJ mol-1

Standard potential

- 2.87 V

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