Question

The number of coordinate bonds presents in $S{O}_3$ molecule are:

• A. 1
• B. 2
• C. 3
• D. none of these

Answer 1

The correct option is D none of these

$S{O}_3$ molecule is trigonal planar.

In $S{O}_3$, there are 6 covalent bonds in which there are 3-$\sigma$ bonds and 3-$\pi$ bonds.

There is no co-ordinate covalent bond because no bond in $S{O}_3$ is formed by donating an electron pair.

So, the number of co-ordinate bonds present in $S{O}_3$ molecule is zero.