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Question

Transitional elements exhibit variable valences because they release e from

A
ns orbital
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B
ns & np orbitals
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C
(n – 1)d & ns orbitals
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D
(n – 1)d orbitals
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Solution

The correct option is C (n – 1)d & ns orbitals
Transition elements show variable oxidation states because of very small energy difference between (n-1)d and ns-orbitals.

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