Cuprous ion is colourless while cupric ion is coloured because
Both have half filled $p $ and $d-$ orbitals
Cuprous ion has incomplete $d-$ orbital and cupric ion has a complete $d-$ orbital
Both have unpaired electrons in the $d-$ orbitals
Cuprous ion has a complete $ d-$ orbital and cupric ion has an incomplete $ d-$ orbital
Which have melting point below $500\,^{\circ} C$.
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be $......$
Which of the following element has maximum density
Transition element makes complex compound due to
Explain why $Cu ^{+}$ ion is not stable in aqueous solutions?