Question

# Subscripts in the chemical formula A2B3 denotes: (i) 2 atoms of A combine with 3 atoms of B to form A2B3 (ii) The subscript 2 denotes that valency of A 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

Solution

## The correct option is B  is true and B is false.The formula A2B3 denotes that 2 atoms of A have combined with 3 atoms of B. The subscripts also represent the valencies of opposite atoms. The valency of A is 3 and that of B is 2 here in this case. Because when we write the formula we cross multiply the valencies.  Chemistry

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