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Trnsition elements show variable oxidati...

Trnsition elements show variable oxidation states. This is due to their valence electrons which are found in two different orbitals i.e., ns and (n-1) d. Up to (+II) oxidation state ns electrons are involved, but in higher oxidation states, electrons of (n-1) d sub-shells are also involved.
the cause of variable oxidation states among transition elements is that

A

they all exist in more than one oxidation states among transition elements is that

B

they all form complex compounds

C

the valence electrons in them are found in two different sub-shells

D

they all have paired sub-shells.

Text Solution

Verified by Experts

The correct Answer is:
C
(c) It is the correct answer.
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Trnsition elements show variable oxidation states. This is due to their valence electrons which are found in two different orbitals i.e., ns and (n-1) d. Up to (+II) oxidation state ns electrons are involved, but in higher oxidation states, electrons of (n-1) d sub-shells are also involved. The most common oxidation state shown by Ist row of transition elements is

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The element that usucally dose NOT show variable oxidation states is :