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MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryd and f Block elementsEx :O O

Which of the following metals does not show variable oxidation states ?

A.Mercury

B.Zinc✓ Correct

C.Gold

D.Silver

Explanation

Zn in 12th group due to 10 d configuration and more energy gap between 3d and 4S subshells

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