Zinc Company Profile

Aggregated data from the web about Zinc

Company Name	Zinc
Website	https://www.mayoclinic.org
Snippet	Zinc, a nutrient found throughout your body, helps your immune system and metabolism function. Zinc is also important to wound healing and your sense of taste and smell. With a varied diet, your body usually gets enough zinc. Food sources of zinc include chicken, red meat and fortified breakfast cereals. People use oral zinc to help treat colds, but it can decrease the effectiveness of certain drugs and cause si…
64Zn	49.2%
65Zn	syn
66Zn	27.7%
67Zn	4.0%
68Zn	18.5%
69Zn	syn
70Zn	0.6%
71Zn	syn
72Zn	syn
69mZn	syn
71mZn	syn
Block	d-block
Group	group 12
P (Pa)	Vapor pressureP (Pa)1101001 k10 k100 kat T (K)6106707508529901179
Period	period 4
at T (K)	610
Discovery	Indian metallurgists (before 1000 BCE)
Isotope	IsotopeAbundanceHalf-life (t1/2)Decay modeProduct64Zn49.2%stable65Znsyn244 dε65Cuγ–66Zn27.7%stable67Zn4.0%stable68Zn18.5%stable69Znsyn56 minβ−69Ga69mZnsyn13.8 hβ−69Ga70Zn0.6%stable71Znsyn2.4 minβ−71Ga71mZnsyn4 dβ−71Ga72Znsyn46.5 hβ−72Ga
Appearance	silver-gray
CAS Number	7440-66-6
Bulk modulus	70 GPa
Phase at STP	solid
Atomic radius	empirical: 134 pm
Boiling point	1180 K (907 °C, 1665 °F)
Melting point	692.68 K (419.53 °C, 787.15 °F)
Mohs hardness	2.5
Poisson ratio	0.25
Shear modulus	43 GPa
Heat of fusion	7.32 kJ/mol
Covalent radius	122±4 pm
First isolation	Andreas Sigismund Marggraf (1746)
Young's modulus	108 GPa
Brinell hardness	327–412 MPa
Oxidation states	−2, 0, +1, +2 (an amphoteric oxide)
Atomic number (Z)	30
Crystal structure	hexagonal close-packed (hcp)
Electronegativity	Pauling scale: 1.65
Magnetic ordering	diamagnetic
Thermal expansion	30.2 µm/(m⋅K) (at 25 °C)
Natural occurrence	primordial
Density (near r.t.)	7.14 g/cm3
Electrons per shell	2, 8, 18, 2
Ionization energies	1st: 906.4 kJ/mol, 2nd: 1733.3 kJ/mol, 3rd: 3833 kJ/mol, (more)
Molar heat capacity	25.470 J/(mol·K)
Heat of vaporization	115 kJ/mol
Thermal conductivity	116 W/(m⋅K)
Van der Waals radius	139 pm
when liquid (at m.p.)	6.57 g/cm3
Electrical resistivity	59.0 nΩ⋅m (at 20 °C)
Electron configuration	[Ar] 3d10 4s2
Speed of sound thin rod	3850 m/s (at r.t.) (rolled)
Molar magnetic susceptibility	−11.4×10−6 cm3/mol (298 K)[2]
Recognized as a unique metal by	Rasaratna Samuccaya (1300)
Standard atomic weight.mw-parser-output .nobold{font-weight:normal} Ar, std(Zn)	65.38(2)[1]

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