$Cu^+$ ion is not stable in aqueous solution, due to
$d^{10}$ configuration
disproportionation
less charge
pseudo inert gas configuration
Which one of the following characteristics of the transition metals is associated with their catalytic activity
The chief constituents of steel made in India are
Which of the following compounds is not coloured ?
In the series $\operatorname{Sc}(Z=21)$ to $\operatorname{Zn}(Z=30)$, the enthalpy of atomisation of zinc is the lowest, i.e.. $126\, kJ\, mol ^{-1}$. Why?
Invar, an alloy of $ Fe$ and $ Ni $ is used in watches and meter scale, its characteristic property is