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nitrate
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Nitrate is a polyatomic ion with the molecular formula NO3− and a molecular mass of 62.0049 g/mol. Nitrates also describe the organic functional group RONO2 . These nitrate esters are a specialized class of explosives.
==Structure==
The anion is the conjugate base of nitric acid, consisting of one central nitrogen atom surrounded by three identically bonded oxygen atoms in a trigonal planar arrangement. The nitrate ion carries a formal charge of -1. This results from a combination formal charge in which each of the three oxygens carries a − charge, whereas the nitrogen carries a 1+ charge, all these adding up to formal charge of the polyatomic nitrate ion. This arrangement is commonly used as an example of resonance. Like the isoelectronic carbonate ion, the nitrate ion can be represented by resonance structures:
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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