Cuprous ion is colourless while cupric ion is coloured because
Both have half filled $p-$ and $d-$ orbitals
Cuprous ion has incomplete $d-$ orbitaland cupric ion has a complete $d-$ orbital
Both have unpaired electrons in the $d-$ orbitals
Cuprous ion has complete $d-$ orbital and cupric ion has an incomplete $d-$ orbital.
Ammonia is a Lewis base. It forms complexes with cations. Which one of the following cations does not form complex with ammonia
The addition of metals like $Cr,\,Mn,\,W$ and $Ni$ to ordinary steel makes it
Which element can have oxidation state from $4 $ to $6 $?
Stainless steel is an alloy of
A pink coloured salt turns blue on heating. The presence of which cation is most likely ?