Physical Properties Of Nitrogen Family

January 22, 2013 General Knowledge

PROPERTY	ELEMENT
PROPERTY	N	P	As	Sb	Bi
Atomic number	7	15	33	51	83
Atomic mass	14.01	30.97	74.92	121.75	208.98
Covalent radius /pm	70	110	120	140	150
Ionic radius / pm	171N^3-	212P^3-	222As³⁺	76Sb³⁺	103Bi³⁺
First ionisation energy kj mol^-1	1402	1012	947	834	703
Second ionisation energy kj mol^-1	2856	1903	1798	1595	1690
Third ionization energy kj mol^-1	4577	2910	2736	2443	2466
electronegativity	3.0	2.1	2.0	1.9	1.9
Density (g/cm³)	0.879	1.832	5.778	6.697	9.808
Melting point (K)	63	317.1	1089	903.7	544.4
Boiling point	77.2	553.5	888	1860	1837

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