Question

1) The largest 0-0 bond length is expected in the species :
(A) 022+
(B) 02 +
(C) 02 -
(D) 022-



2) The values of n and m for the spectral lines to be observed in the visible region in
the relationship
(A) n = 1; m = 2, 3, 4..... (B) n = 1; m = 3,4,5.....
(C) n = 2; m = 3,4,5..... (D) n = 2; m = 4,5,6.....​

Answer 1

Bond length is inversely proportional to Bond order

So here the largest bond length would be of the molecule having l minimum bond order

O2²-(D)

2) The question is unclear I think (C)

balmer (C)