Aditya Kumar , asked a question
Subject: Science , asked on 23/11/11

 why is copper nitrate written as Cu(NO3)2 instead of CuNO3 when the valency of copper is +1 i.e why do we use the (II) valency of copper(+2) only in formula  of copper nitrate?

Anjana Padmakumar , added an answer, on 23/11/11
14 helpful votes in Science

 copper can be classified into two,cupprous and cupric.cupprus has valency no:1 and cuppric has valency 2.cuppric is taken as the common copper.so we use cuppric valency to mention copper..that means we take valency of cuppric as the valency of copper..

 

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