Question

Which of the following is paramagnetic and has highest bond length?O2,C2,N2,F2

Answer 1

Answer:

according molecular orbital theoryN2,F2,C2 is diamagnetic in nature because paired electron is present and O2 is paramagnetic ,, bond length is inversely propotional to bond order so if bond order decrease bond length increase for O2=2 , C2=2,N2=3,F2=1. but F2 and C2 is diamagnetic so O2 is correct

Answer 2

O2 is paramagnetic and F2 has the highest bond length among the given diatomic compounds.

- C2, N2 and F2 have no unpaired electrons, so they are diamagnetic in nature.

- Only O2 has unpaired electrons in it, so it is paramagnetic in nature.

- Since F atom is very small in size, there is greater electronic repulsion between the F atoms.

- Hence they repel each other and bond length increases.

- So, F2 has the highest bond length among them.