Question

Subscripts in the chemical formula X₂Y₃ denotes:

A. 2 atoms of X combine with 3 atoms of Y to form X₂Y₃

B.The subscript 2 denotes that valency of X is 2.

• A. A is true and B is false.
• B. A is false and B is true.
• C. Both A and B are true
• D. Both A and B are false

Answer 1

The correct option is A

A is true and B is false.

The subscript 2 in X denotes that the valency of Y is 2 while that of X is 3 because after crisscrossing the valencies we get $X_2{Y}_3$ which means 2 atoms of X combine to form 3 atoms Y.