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Q.

Which of the following statement is/are correct'?

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a

The peroxide ion has a bond order of 1 while the oxygen molecule has a bond order of 2.

b

The peroxide ion has a weaker bond than the dioxygen molecule has.

c

The peroxide ion as well as the dioxygen molecules are paramagnetic

d

The bond length of the peroxide ion is greater than that of the dioxygen molecule.

answer is A.

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Detailed Solution

1)  Peroxide ion O22−↓B.O.=1 Oxygen O2↓B.O.=22)  B.O. ∝1 B.L. ⇒Peroxide has weaker bond compound to O23) O22−(18e¯)O2(18e¯) diamagnetic ↓  Paramagnetic 4) Correct.
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Which of the following statement is/are correct'?