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1s2 2s2 2p6 3s2 3p6 3d10 4s2
[ ? ] Transition metal:
Bluish-white metal.

Zinc is a chemical element, having the chemical symbol Zn. Its atomic number (the number of protons) is 30. It has a standard atomic weight of 65.409 g•mol −1, and is a solid in its elemental form.

Zinc is considered to be a member of the "Transition metal" class of element. At a pressure of 101.325 kPa, it has a boiling point of 907 °C, and a melting point of 419.5 °C.

Health care

"Zinc administered within 24 hours of onset of symptoms reduces the duration and severity of the common cold in healthy people" according to the Cochrane Collaboration.[1]


  1. Singh M, Das RR (2011). "Zinc for the common cold.". Cochrane Database Syst Rev 2: CD001364. DOI:10.1002/14651858.CD001364.pub3. PMID 21328251. Research Blogging.