Question

How is valency helpful in writing chemical formula? Which one of the following is correct?

• A. Formula can be written by balancing the valencies of the different atoms.
• B. Formula can be written by reducing the valencies of different atoms.
• C. Formula can be written by balancing the valencies of the same atoms.
• D. Formula can be written by balancing the moles.

Answer 1

The correct option is A

Formula can be written by balancing the valencies of the different atoms.

If a compound is made of hydrogen and sulphur elements, then we can adjust the number of hydrogen atoms and sulphur atoms in such a way that the total valencies of hydrogen atoms becomes equal to the total valencies of sulphur atoms. Therefore, option A is correct.