Question

Subscripts in the chemical formula X₂Y₃ denote:

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. 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

is true and B is false.

The first statement is true. There are 2 atoms of X combining with 3 atoms of Y.

But then second one is false. The subscript 2 denotes tell us that the valency of Y is 2. Because when we write the formula we cross multiply the valencies.