which of the following element do not exhibit variable oxidation state?
a. copper
b. Mercury
c. calcium
d. iron
Answers
Answered by
2
The answer is Copper option (a)
Answered by
0
Answer:
The electronic configuration of zinc is [Ar]3d
10
4s
2
.
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.
Option C is correct.
Explanation:
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