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JEE Main 202621 JanuaryEvening Shift
Exam
JEE Main
Year
2026
Date
21 January
Shift
Evening Shift
Subject
Chemistry
Chapter
d and f Block Elements

JEE Main 2026 · 21 January · Evening Shift · Chemistry · d and f Block Elements

Given below are some of the statements about Mn and Mn_ 2 O_ 7 ....

Given below are some of the statements about Mn and Mn2O7\mathrm{Mn}_{2} \mathrm{O}_{7}. Identify the correct statements.
A. Mn forms the oxide Mn2O7\mathrm{Mn}_{2} \mathrm{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. Mn2O7\mathrm{Mn}_{2} \mathrm{O}_{7} is an ionic oxide.
D. The structure of Mn2O7\mathrm{Mn}_{2} \mathrm{O}_{7} consists of one bridged oxygen.
Choose the correct answer from the options given below :

Options

  1. AA, B and D Only
  2. BA, B and C Only
  3. CA, B, C and D
  4. DA, C and D Only

Correct answer

A. A, B and D Only

Step-by-step solution

Analyzing each statement:

Statement A: In Mn₂O₇, using oxidation state calculation: 2(Mn) + 7(O⁻²) = 0, so Mn oxidation state = +7. This is indeed the highest oxidation state for Mn. TRUE.

Statement B: Oxygen stabilizes Mn in +7 oxidation state through multiple bonding (Mn=O double bonds and bridging), reducing electron density effectively. TRUE.

Statement C: Mn₂O₇ is primarily a covalent oxide with significant Mn-O covalent bonding character. The oxide is not ionic in nature. FALSE.

Statement D: The structure of Mn₂O₇ contains bridged oxygen atoms (Mn-O-Mn linkages) along with terminal Mn=O bonds. TRUE.

Statements A, B, and D are correct while C is incorrect. The answer is option (1): A, B and D Only.
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