General | States | Energies | Oxidation & Electrons |Appearance & Characteristics
Reactions | Other Forms |Radius | Conductivity | Abundance
Encyclopedia Britannica articles


Name Zinc Symbol Zn
atomic number 30 Atomic weight 65.38
Density @ 293 K 7.14 g/cm3 Atomic volume 9.2 cm3/mol
Group Trans. Met. discovered 1600


state (s, l, g) s
melting point 692.78 K boiling point 1180 K
Heat of fusion 7.322 kJ/mol Heat of vaporization 115.30 kJ/mol
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1st ionization energy 906.4 kJ/mole electronegativity 1.65
2nd ionization energy 1733.2 kJ/mole electron affinity kJ/mole
3rd ionization energy 3832.6 kJ/mole Specific heat 0.39 J/gK
heat atomization 131 kJ/mole atoms

Oxidation & Electrons

Shells 2,8,18,2 electron configuration [Ar] 3d10 4s2
minimum oxidation number 0 maximum oxidation number 2
min. common oxidation no. 0 max. common oxidation no. 2
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Appearance & Characteristics

structure distorted hcp structure color silvery
uses batteries, galvanizing toxicity
hardness 2.5 mohs characteristics brittle


reaction with air vigorous, = ZnO reaction with 6M HCl mild, = H2, ZnCl2
reaction with 6M HCl mild, = H2, ZnCl2 reaction with 15M HNO3 vigorous, = Zn(NO3)2, NOx
reaction with 6M NaOH mild, = [Zn(OH)4](2-), H2
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Other Forms

number of isotopes 5 hydride(s) ZnH2
oxide(s) ZnO chloride(s) ZnCl2


ionic radius (2- ion) pm ionic radius (1- ion) pm
atomic radius 134 pm ionic radius (1+ ion) pm
ionic radius (2+ ion) 88 pm ionic radius (3+ ion) pm
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thermal conductivity 116 J/m-sec-deg electrical conductivity 169.033 1/mohm-cm
polarizability 6.4 A^3


source Sphalerite (sulfide) rel. abund. solar system 3.100 log
abundance earth's crust 1.79 log cost, pure 3.7 $/100g
cost, bulk 0.12 $/100g
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World Wide Web presentation of Chemicool Periodic Table is © Copyright 1996-99 by David D. Hsu. Some data were provided by and used with the permission of JCE Software and is owned and copyright by the Division of Chemical Education, Inc. Additional data were provided by Perkin-Elmer through Peter Lykos of IIT. The information may not be redistributed without the permission of David Hsu or JCE Software.