Which of the following is not known for variable valancy and oxidation state.
(a) Zn
(b) Sc
(c) Al
(d) All of above
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Option A is correct answer
Zn
The electronic configuration of zinc is
[Ar] 3d¹⁰ 4s²
It can only lose two electrons from the 4s orbital and show +2
oxidation state.
It does not show variable valency.
However, all other transition metals like Mn, Fe, Cr have partially filled d orbitals and hence, show variable valency.
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Answer:
Which of the following is not known for variable valancy and oxidation state.
Ans. is zinc
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