Template:Infobox zinc

copper ← zinc → gallium - ↑ Zn ↓ Cd 30Zn Periodic table
Appearance
silver-gray
General properties
Name, symbol, number	zinc, Zn, 30
Pronunciation	/ˈzɪŋk/ zingk
Element category	transition metal
Category notes	Alternatively considered a post-transition metal
Group, period, block	12, 4, d
Standard atomic weight	65.38(2)(4)
Electron configuration	[Ar] 3d10 4s2
Electrons per shell	2, 8, 18, 2 (Image)
Physical properties
Phase	solid
Density (near r.t.)	7.14 g·cm−3
Liquid density at m.p.	6.57 g·cm−3
Melting point	692.68 K, 419.53 °C, 787.15 °F
Boiling point	1180 K, 907 °C, 1665 °F
Heat of fusion	7.32 kJ·mol−1
Heat of vaporization	123.6 kJ·mol−1
Molar heat capacity	25.470 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 610 670 750 852 990 1179
Atomic properties
Oxidation states	+2, +1, 0 (amphoteric oxide)
Electronegativity	1.65 (Pauling scale)
Ionization energies (more)	1st: 906.4 kJ·mol−1
	2nd: 1733.3 kJ·mol−1
	3rd: 3833 kJ·mol−1
Atomic radius	134 pm
Covalent radius	122±4 pm
Van der Waals radius	139 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	diamagnetic
Electrical resistivity	(20 °C) 59.0 nΩ·m
Thermal conductivity	116 W·m−1·K−1
Thermal expansion	(25 °C) 30.2 µm·m−1·K−1
Speed of sound (thin rod)	(r.t.) (rolled) 3850 m·s−1
Young's modulus	108 GPa
Shear modulus	43 GPa
Bulk modulus	70 GPa
Poisson ratio	0.25
Mohs hardness	2.5
Brinell hardness	412 MPa
CAS registry number	7440-66-6
Most stable isotopes
Main article: Isotopes of zinc
iso NA half-life DM DE (MeV) DP 64Zn 48.6% 64Zn is stable with 34 neutrons 65Zn syn 243.8 d ε 1.3519 65Cu γ 1.1155 - 66Zn 27.9% 66Zn is stable with 36 neutrons 67Zn 4.1% 67Zn is stable with 37 neutrons 68Zn 18.8% 68Zn is stable with 38 neutrons 70Zn 0.6% 70Zn is stable with 40 neutrons 72Zn syn 46.5 h β− 0.458 72Ga

References

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