Discussion Forum



1)

According to molecular orbital theory, which of the following statement(s) is (are) correct?


A) $C^{2-}_{2}$ is expected to be diamagnetic

B) $O^{2+}_{2}$ expected to have a longer bond length than $O_{2}$

C) $N^{+}_{2}$ and $N^{-}_{2}$ have the same bond order

D) $He^{+}_{2}$ has the same energy as two isolated He atoms

Answer:

Option A,C

Explanation:

1322021639_c5.JPG

Thus , (a) is correct.

(b) Bond order  $O^{2+}_{2}>O_{2}$  thus,

Bond length of  $O^{2+}_{2}<O_{2}$ thus, incorrect

(c)$N^{+}_{2}$ and $N^{-}_{2}$ have  same bond order thus correct.

(d) $He^{+}_{2}$ with bond order =0.5 is more stable thus, less energy than isolated He atoms . Thus, (d)  is incorrect.