Answer the question on the basis of the passage given below:

Oxides formed by \(p\)- block elements are acidic, basic and neutral. Also, elements of \(p\)-block from different acids.

In a cyclotrimetaphosphoric acid molecule, how many single and double bonds are present?

3-double bonds, 9-single bonds

The correct answer is option 3. 3-double bonds, 9-single bonds.

Phosphorus forms many oxoacids are \(H_3PO_2, H_3PO_4, H_3PO_4\), etc. In oxoacids of phosphorus, \(P\) is tetrahedrally surrounded by other atoms. All of these are known to form at least one \(P-H\) bond and an \(O-H\) bond.

\(P-P\) bonds or \(P-H\) bonds are also found including \(P=O\) bonds in poly oxoacids of phosphorus. The oxidation number of \(P\) is less than \(+5\) in oxoacids of phosphorus.

Cyclotrimetaphosphoric acid molecule is a type of metaphosphoric acid the molecular formula is \((HPO_3)_3\) and the structure is:

From the above structure of Cyclotrimetaphosphoric acid molecule, there are 3 \(P=O\) bonds, 3 \(P-OH\) bonds, and 3 \(O-P-O\) bonds. Hence, a total of 3 double bonds and 9 single bonds. So, Cyclotrimetaphosphoric acid molecule has 3 double bonds and 9 single bonds.