What are the bonds ino^3 expected to be?

One single coordinate covalent bond and one double covalent bond between the oxygen atoms, not in the expected triangular but in 1 bond structure.

Explanation:

O³ is also called ozone, and has three atoms in each molecule which makes it an allotropic form of oxygen.

Compared to oxygen, ozone is much more chemically active.

⇒The structure of ozone has 3 oxygen atoms, but due to steric hindrance, they can't  form the expected triangular structure, with each O atom.

⇒Instead each Oxygen forms only 1 bond, with the remaining negative charge being spread throughout the molecule, with one single coordinate covalent bond and one double covalent bond.

⇒The two O-O that share the double covalent bond are nonpolar as there is no electronegativity between  atoms of the same element (they share the same number of electrons, so there is no difference).

⇒ However, the distribution of the electrons along the 3 oxygen atoms is uneven, because the central atom must share electrons with the two atoms at both sides. The outer atoms only share electrons with the central atom.

So we can say that the central atom is more deprived of electrons than the 2 other oxygen atoms.

In terms of geometry,the molecule is bent, which is the result of this sharing of electrons and thus results in a dipole force across the ozone molecule.  

i do not get it   at all