Which of the following is not a possible empirical formula? CH_(5) P_(2)O_(6) C_(5)H_(11) NO_(2)

The correct answer is .Explanation:Empirical formulas represent the simplest whole-number ratio of atoms in a compound. Let's analyze each option:1. : This formula suggests a 1:5 ratio of carbon to hydrogen, which is not a common or stable empirical formula for any known compound. Empirical formulas are typically simplified to the smallest whole-number ratio, and this ratio cannot be simplified further.2. : This formula represents a 2:6 ratio of phosphorus to oxygen, which can be simplified to , making it empirical formula.3. : This formula represents a 5:11 ratio of carbon to hydrogen, which is already in its simplest form and is a valid empirical formula.4. : This formula represents a 1:2 ratio of nitrogen to oxygen, which is already in its simplest form and is a valid empirical formula.Therefore, the correct answer is , as it is not a possible empirical formula.