A.X₃Y                   B.XY₂                                      C.X₃Y₂                                   D.XY₄??

X、Y兩種元素組成的兩種化合物甲和乙，已知：甲的分子式為XY₃，甲中X的質(zhì)量分?jǐn)?shù)為80%，乙中Y的質(zhì)量分?jǐn)?shù)為25%，則乙的分子式為(　　)?

A.X₃Y                  B.XY₂                                     C.X₃Y₂                                   D.XY₄??

X、Y兩種元素組成的兩種化合物甲和乙，已知：甲的分子式為XY₃，甲中X的質(zhì)量分?jǐn)?shù)為80%，乙中Y的質(zhì)量分?jǐn)?shù)為25%，則乙的分子式為(　　)

A.X₃Y           B.XY₂                    C.X₃Y₂                   D.XY₄

X、Y兩種元素組成的兩種化合物甲和乙，已知：甲的分子式為XY₃，甲中X的質(zhì)量分?jǐn)?shù)為80%，乙中Y的質(zhì)量分?jǐn)?shù)為25%，則乙的分子式為

1. A.
   X₃Y
2. B.
   XY₂
3. C.
   X₃Y₂
4. D.
   XY₄