Sunday, 4 October 2015

inorganic chemistry - Why do we write NH3?


We've learnt that the electropositive element is written first. Then why is ammonia written as $\ce{NH3}$ ?



Answer



According to current nomenclature rules, $\ce{H3N}$ would be correct and acceptable. However some chemical formulas, like $\ce{NH3}$ for ammonia, that were in use long before the rules came out, are still accepted today.


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