Per NCERT §3.6.3, which Group 12 elements (Zn, Cd, Hg) DO NOT show typical d-block (transition) properties, and why?
AThey have no electrons in d
BThey are gases
CTheir (n−1)d¹⁰ ns² configuration has a fully filled d sub-shell — no partially-filled d typical of transitions
DThey are radioactive
Answer & Solution
Correct answer: C. Their (n−1)d¹⁰ ns² configuration has a fully filled d sub-shell — no partially-filled d typical of transitions
Per NCERT §3.6.3, Zn/Cd/Hg are (n−1)d¹⁰ ns² — d is full, so they lack characteristic variable-valence + colour of true transition metals.
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