Nb - Niobium - periodic table of the elements

A transition metal, discovered by Hatchett in 1801 in London. Niobium was formerly known as columbium.

Atomic number	-	41		Density	g/mL	8	.55
Atomic weight	u	92	.9064	Melting point	K	2740
Bonding radius	A	1	.34	Boiling point	K	5017
Atomic radius	A	2	.08	Heat of vaporization	kJ/mol	682
Ionization Potential	V	6	.88	Heat of fusion	kJ/mol	26	.4
Electronegativity	-	1	.6	Specific heat	J/gK	0	.26
The oxide is mildly acidic.				Crystal are body centered cubic.
Electron configuration: [Kr] 4d⁴ 5s¹

Other elements of the periodic table

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La * Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac ** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr