Copper Gallium

Zinc (Zn)

From Wikipedia, the free encyclopediaZinc, in commerce also spelter, is a chemical element with symbol Zn and atomic number 30. It is the first element of group 12 of the periodic table. In some respects zinc is chemically similar to magnesium:its ion is of similar size and its only common oxidation state is +2.

Zinc in the periodic table

Symbol

Atomic number

Group

Period

Block

Element category

Transition Metal

Physical properties

Phase at STP

Solid

Density

7.14 g/cm³

Atomic weight

65.382 u

Melting point

692.68 K
419.53 °C
787.154 °F

Boiling point

1180 K
906.85 °C
1664.33 °F

Atomic properties

Electronegativity (Pauling Scale)

1.65

Electron affinity

-58 kJ/mol

Oxidation states

−2, 0, +1, +2
(an amphoteric oxide)

Ionization energies

1	906.4 kJ/mol
2	1733.3 kJ/mol
3	3833 kJ/mol
4	5731 kJ/mol
5	7970 kJ/mol
6	10400 kJ/mol
7	12900 kJ/mol
8	16800 kJ/mol
9	19600 kJ/mol
10	23000 kJ/mol
11	26400 kJ/mol
12	29990 kJ/mol
13	40490 kJ/mol
14	43800 kJ/mol
15	47300 kJ/mol
16	52300 kJ/mol
17	55900 kJ/mol
18	59700 kJ/mol
19	67300 kJ/mol
20	71200 kJ/mol
21	179100 kJ/mol

Electron configuration

Elektronkonfiguration (shorthand)

[Ar] 3d¹⁰ 4s²

Electron configuration

1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹ 4s²

Electrons per shell

2, 8, 18, 2

History

Discovered

-1000

Discovered by

Indian metallurgists