1.

Assertion . In Cr_(2)O_(7)^(2-) ion, all the Cr-O bond lengths are equal. Reason. In Cr_(2)O_(7)^(2-) ion, all the O-C-O bond angles are equal.

Answer»

Solution :Correct A. TWO Cr-O bonds have different bond LENGTHS than the remaining SIX Cr-O bonds.
Correct R. Cr-O-Cr bond in the middle is different from other O-Cr-O bond angles.


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