Question

Increasing order of bond length in f2 n2 o2 cl2

Answer 1

the increasing order of bond lenth of(f2 n2 o2 and cl2) is 
f2 n2 cl2 o2

Answer 2

Answer: Increasing order of bond length is $N_2<O_2<F_2<Cl_2$

Explanation:

Bond length is defined as the average distance between nuclei of two bonded atoms in a molecule.

Bond length is directly related to the size of an atom. In a group, the size of atom increases as we move down the group because additional shell get added around the nucleus and the outermost orbital gets far away from the nucleus.

In a period, the size of atom decreases as we move from left to right because additional electron gets added to the nucleus and the attraction of nucleus to electrons increases. Hence, the size of atom contracts.

Fluorine is present in Group 17 and period 2.

Chlorine is present in Group 17 and Period 3.

Oxygen is present in Group 16 and Period 2.

Nitrogen is present in Group 15 and Period 2.

Hence, the increasing order of bond length is $N_2<O_2<F_2<Cl_2$