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Q.

Transition element which does not show variable oxidation state is

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a

Zn

b

Fe

c

Sc

d

Cu

answer is A.

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Detailed Solution

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Sc generally shows +3 Oxidation state. Scandium does not show +2 oxidation state as it requires high energy for removing one more electron is very high. Another reason is in +3 it shows inert gas configuration.

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