Atomic number:	18		Atomic weight:	39.948
Shells:	2,8,8		Orbitals:	[Ne] 3s2 3p6
Melting point:	-189.2°C		Boiling point:	-185.7°C
Covalent radius:	0.98	Å	Atomic volume:	23.9	cm³/mol
Atomic radius:	0.88	Å	Ionic radius:	--	Å
Electronegativity:	0		Oxidation states:
1st ionization pot.:	15.7596	V	2nd ionization pot.:	27.629	V
3rd ionization pot.:	40.74	V	Specific heat:	0.520	J/gK
Heat of fusion:	1.188	kJ/mol	Heat of vapor.:	6.447	kJ/mol
Thermal conduct.:	0.0001772	W/cmK	Electrical conduct.:	--	10^6/cm ohm
Density:	0.0017824	g/cm³	Valence:	0