JEE Main 2026 — Jan 21, Shift 2 — Chemistry solution

JEE Main2026Jan 21, Shift 2Chemistry

Given below are some of the statements about Mn and $M n_{2} O_{7}$ . Identify the correct statements

A. Mn forms the oxide $M n_{2} O_{7}$ in which Mn is in its highest oxidation state.

B. Oxygen stabilizes the Mn in higher oxidation states by forming multiple bonds with Mn

C. $M n_{2} O_{7}$ is an ionic oxide.

D. The structure of $M n_{2} O_{7}$ consists of one bridged oxygen.

Choose the correct answer from the options given below:

Solution

(A) In $M n_{2} O_{7}$ each Mn is +7, the highest known for Mn. True.

(B) The Mn=O multiple bonds spread out the formal charge and let oxygen stabilise the unusually high oxidation state. True.

(D) Its structure is two $M n O_{3}$ tetrahedra sharing one bridging oxygen — i.e. $O_{3} M n - O - M n O_{3}$ . True.

So A, B and D only.

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