Zinc

Koushik 26/06/2026 19:58:08 Updated 26/06/2026 19:58:08
Property Value
Atomic Number 30
Element Zinc
Symbol Zn
Atomic Mass 65.38 u
Number of Neutrons 34 (most common isotope, Zinc-64)
Number of Protons 30
Number of Electrons 30
Period 4
Group 12
Phase Solid
Radioactive No
Natural Yes
Metal Yes
Nonmetal No
Metalloid No
Type Transition Metal
Atomic Radius 142 pm
Electronegativity 1.65 (Pauling scale)
First Ionization Energy 9.394 eV
Density 7.14 g/cm³
Melting Point 419.53 °C
Boiling Point 907 °C
Number of Isotopes 5 stable (Zinc-64, Zn-66, Zn-67, Zn-68, Zn-70)
Discoverer Andreas Sigismund Marggraf
Year 1746
Specific Heat 0.388 J/g·K
Number of Shells 4
Number of Valence Electrons 12
Tags: Tutorials Chemistry tutorial step by step learn how to guide examples
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