Coloured salts are formed by
Alkali metals
Lanthanides
Actinides
Transition metals
Spin only magnetic moment of $\left[ MnBr _{6}\right]^{4-}$ is $.....\,B.M.$ (round off to the closest integer)
Pair of ions which gives blue colour in aqueous state :
$V^{+4},\,Ni^{+2},\, Ti^{+3}, \,Co^{+2}, \,Fe^{+3}, \,Cu^{+2}$
In the series $Sc(Z = 21)$ to $Zn(Z = 30)$ , the enthalpy of atomization of _____ is the lowest
Transition elements show high melting points. Why?
The element exhibiting most stable $ + \,2$ oxidation state among the following is