Bond Parameters

See Rapid Revision Aids.

It is less than 100 C because of lack of formation of H bonds.

is tetrahedral and is linear. They are symmetrical molecules with zero dipole moment. Fluorine is more electronegative than oxygen. Hence, the dipole moment of is more than .

As the -character or number of -electrons increases, bond length decreases.

Therefore, due to the absence of -electrons or due to the presence of lesser -character , has the longest bond distance.