Question

how many of the following have more bond length than C2? Li2,B2,N2,O2,F2

Answer 1

Answer:

Li2,B2,F2

Explanation:

Li2,B2,F2...have bond order = 1 ( by Molecular Orbital Theory)  hence there bond lengths are greater than C2 whose bond order is 2 ( bond order is inversely proportional to bond length..i.e, greater the bond order lesser is its bond length).

Whereas for N2 has bond order 3 therefore lesser bond length and O2 has same bond order.