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UHS MDCAT 2025 Chemistry uhs mdcat chemistry 2025 #Empirical and Molecular Formula #Stoichiometry

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Oxidation numbers of X, Y, and Z are +6, −2, and −1 respectively. The possible molecular formula when these atoms combine is:

Verified Answer & Explanation⌄

Correct Answer: B) XY₂Z₂

Concept Explanation

For XY₂Z₂, total oxidation number = +6 + 2(−2) + 2(−1) = 0, so XY₂Z₂ is electrically neutral.

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