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What are the bond angles between X₁, X₄, X₅, and X₆ in the given structure?

1. X₄-M-X₁ = 180°
2. X₁-M-X₆ = 180°
3. X₅-M-X₆ = 180°
4. All of the above

Correct answer: All of the above

Solution

The question implies a linear geometry for the molecule, where all the given bond angles are 180°. This is consistent with a central atom (M) surrounded by atoms in a straight line.

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