# In ${{\text{P}}_{4}}{{\text{O}}_{10}}$, the number of oxygen atoms attached to each phosphorus atom is:A. 2B. 3C. 4D. 5

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Hint: ${{\text{P}}_{4}}{{\text{O}}_{10}}$ is a molecular formula of pentoxide which consists of 4 molecules of phosphorus and 10 molecules of oxygen. The phosphorus can make a maximum of 5 bonds with other molecules whereas oxygen can make a maximum of 2 bonds with other molecules.

-The double-bonded oxygen has a hybridisation of $\text{s}{{\text{p}}^{2}}$
-Whereas 6 oxygen atoms are attached to the two phosphorus atoms each with a single bond in which the hybridisation of oxygen atom is $\text{s}{{\text{p}}^{3}}$.
Note: The preparation of phosphorus pentoxide is done when tetraphosphorus reacts with oxygen molecules: ${{\text{P}}_{4}}\text{ + 5}{{\text{O}}_{2}}\text{ }\to \text{ }{{\text{P}}_{4}}{{\text{O}}_{10}}$. The compound is used as a dehydrating agent and is white in appearance. The name of the compound is named so because it is the empirical formula of ${{\text{P}}_{4}}{{\text{O}}_{5}}$.