1.

Consider the following molecules `underset(I)(O_(2)),O_(2)underset(II)(("AsF"_(6))),underset(III)(KO_(2))` Choose the correct answer.A. The correct decreasing bond order is `II gt I gt III`.B. The correct decreasing order of bond length is `III gt II gt I`.C. The bond strength of I is less than that of III.D. Bond dissociation energy is highest in case of III.

Answer» Correct Answer - A
In `O_(2)(AsF_(6)), O_(2)^(+)` has bond order 2.5 .
`O_(2)` has bond order 2.0 .
In `KO_(2), O_(2)^(-)` has bond order 1.5
Higher the bond order, smaller is the bond length.
Hence, the order is `O_(2)(AsF_(6)) gt O_(2) gt KO_(2)`.


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