Question

The d-block of the periodic table contains the elements of the groups
3 12 and are known as transition elements. In general, the electronic
configuration of these elements is (n - 1) dl-10 ns 1-2. The d-orbitals of the
penultimate energy level in their atoms receive electrons giving rise to
the three rows of the transition metals i.e., 3d, 4d and 5d series.
However, Zn, Cd and Hg are not regarded as transition elements.
Transition elements exhibit certain characteristic properties like variable
oxidation states, complex formation, formation of coloured ions and
alloys, catalytic activity, etc. Transition metals are hard (except Zn, Cd
and Hg) and have a high melting point​

why are Zn Cd and Hg non transition elements?

Answer 1

Answer:

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