When ammonia is added to a cupric salt solution, the deep blue colour is observed it is due to the formation of
${\left[ {Cu{{\left( {OH} \right)}_4}} \right]^{2 - }}$
${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$
${\left[ {Cu{{\left( {{H_2}O} \right)}_2}{{\left( {N{H_3}} \right)}_2}} \right]^{2 + }}$
${\left[ {Cu{{\left( {{H_2}O} \right)}_4}} \right]^{2 + }}$
The atomic radii from $Cr$ to $Cu$ is almost identical because of
Ionisation potential values of $d-$ block elements as compared to ionization potential value of $ f-$ block elements are
How would you account for the irregular variation of ionisation enthalpies (first and second) in the first series of the transition elements?
Why do the transition elements exhibits variable oxidation states?
What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements: $29,59,74,95,102,104$ .