Which of the following is expected to form colourless complex
$N{i^{2 + }}$
$C{u^ + }$
$T{i^{3 + }}$
$F{e^{3 + }}$
Chloride of which of the following element is coloured
Coloured salts are formed by
$\mu = \sqrt{15}$ is true for the pair :-
The metal ion which does not form coloured compound is
White silver surface turns black when $O_3$ is passed over it. This is due to the formation of