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Cn,symbol for the element coperniciumcopernicium,
artificially produced radioactive chemical element; symbol Cn; at. no. 112; mass number of most stable isotope 285; m.p., b.p., sp. gr., and valence unknown.
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CN,ordinary tear gastear gas,
gas that causes temporary blindness through the excessive flow of tears resulting from irritation of the eyes. The gas is used in chemical warfare and as a means for dispersing mobs.
..... Click the link for more information. . The chemical name for CN is chloroacetophenone.
The country code for China.