Final answer:
The molecular formula among the given options that does not correspond to the empirical formula XY2Z is d) X3Y6Z3. The empirical formula for this compound simplifies to XY2Z.
Step-by-step explanation:
The question asks which of the following molecular formulas does not have the corresponding empirical formula XY₂Z:
- a) X₂Y₄Z₂
- b) XYZ
- c) X₆Y₁₂Z₆
- d) X₃Y₆Z₃
The empirical formula is the simplest whole-number ratio of the elements in a compound. Examining each option:
- The empirical formula for X₂Y₄Z₂ would be XY₂Z by dividing each subscript by 2.
- The empirical formula for XYZ is already in the simplest form, XY₂Z, assuming X and Y are different elements and the '2' is a typo.
- The empirical formula for X₆Y₁₂Z₆ would be XY₂Z by dividing each subscript by 6.
- The empirical formula for X₃Y₆Z₃ cannot be simplified to XY₂Z, this formula will simplify to XY₂Z.
Therefore, the molecular formula that does not have the corresponding empirical formula XY₂Z is d) X₃Y₆Z₃.