why is copper nitrate written as Cu(NO3)2 instead of CuNO3 when the valency of copper is +1 i e why - Science - Atoms and Molecules

Question

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 · Answer

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
thumbs up plzz

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?