Co - Cobalt - periodic table of the elements

A transition metal, discovered by Brandt in 1735. Cobalt chloride has a striking color change upon dehydration. For some unknown reason, Chevy named a car after this element. They will soon be releasing a turbocharged coupe named "Molybdenum".

Atomic number	-	27		Density	g/mL	8	.9
Atomic weight	u	58	.9332	Melting point	K	1768
Bonding radius	A	1	.16	Boiling point	K	3201
Atomic radius	A	1	.67	Heat of vaporization	kJ/mol	376	.5
Ionization Potential	V	7	.86	Heat of fusion	kJ/mol	16	.19
Electronegativity	-	1	.88	Specific heat	J/gK	0	.42
The oxide is amphoteric.				Crystal are hexagonal.
Electron configuration: [Ar] 3d⁷ 4s²

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