Question

Subscripts in the chemical formula $X_2{Y}_3$ denotes:

A. 2 atoms of X combine with 3 atoms of Y to form $X_2{Y}_3$

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

Subscripts in the chemical formula $X_2{Y}_3$ denotes:

- 2 atoms of X combine with 3 atoms of Y to form $X_2{Y}_3$

- The subscript 2 denotes that valency of Y is 2 because when we write the formula we cross multiply the valencies.