Question

Which group does not contain transition metals ?

Answer 1

Elements present in groups from 3 to 11 are considered as transition elements.
According to IUPAC, transition metals are defined as metals which have incomplete d subshell either in neutral atom or in their ions. Zinc, cadmium and mercury of group 12 have full $d^{10}$ configuration in their ground state as well as in their common oxidation states and hence, are not regarded as transition metals.
Elements of group 13 to 18 are called as p-block elements. .
Hence, the group 13 does not contain transition elements.
Hence, option (d) is the correct answer.