JEE Main 2017 Chemistry question

The pair of compounds having metals in their highest oxidation state is:

(1) and Correct
(2) and
(3) and
(4) and

Answer: (1)

Solution

The highest oxidation state a transition metal can reach equals the number of its plus electrons. Work through the options. **(1)** In : gives , and manganese () has a maximum of ✓. In (chromyl chloride): $x + 2(-2) + 2(-1) =

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Question ID VK-115802