Q.

The highest oxidation state shown by the first transistion series element in its compounds is

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a

+5

b

+6

c

+7

d

+8

answer is B.

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Detailed Solution

‘Mn’ of 3d series shows highest oxidation state in its compounds.

Ex: KMnO4, Mn2O7

Ru, Os show “+8” state in their oxides but they belong to 4d and 5d series respectively.

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