In which of the following, the tendency towards the formation of coloured ion is maximum?

Options

A. s-block elements
B. d-block elements
C. p-block elements
D. All of these

Answer

B

Explanation

d-block elements form maximum coloured ions. Colour arises due to the presence of unpaired electrons In (n-1) d sub shell, which absorb light from the visible region and thus move to higher energy levels. The visible colour of the ion is the complementary colour of the absorbed light.