JEE Main 2023 — Chemical Bonding And Molecular Structure Question with Solution

Let's analyze each compound separately:

1. ${\mathrm{H}}_4{\mathrm{P}}_2{\mathrm{O}}_7$: This compound is also known as pyrophosphoric acid. Its structure has two phosphorus atoms (P) connected by one oxygen atom (O), forming a P-O-P bond. There are no other P-O-P bonds in its structure. Number of P-O-P bonds = 1



2. ${\left({\mathrm{HPO}}_3\right)}_3$: This compound is also known as cyclotriphosphoric acid. It has three phosphorus atoms and three oxygen atoms, arranged in a cyclic structure with each P atom connected to two O atoms, forming a six-membered ring. In this structure, there are three P-O-P bonds. Number of P-O-P bonds = 3



3. ${\mathrm{P}}_4{\mathrm{O}}_{10}$: This compound is also known as phosphorus pentoxide. Its structure consists of four phosphorus atoms (P) and ten oxygen atoms (O) connected in a cyclic arrangement. In the structure, each phosphorus atom is connected to four oxygen atoms, with two terminal oxygen atoms and two bridging oxygen atoms. There are six P-O-P bonds in the P₄O₁₀ structure.



So, the number of P-O-P bonds in ${\mathrm{H}}_4{\mathrm{P}}_2{\mathrm{O}}_7,{\left({\mathrm{HPO}}_3\right)}_3$, and ${\mathrm{P}}_4{\mathrm{O}}_{10}$ are 1, 3, and 6, respectively.