Question

4. To create a chemical formula, you
need to know *
the atomic mass of an element

the mass of an element

valency of an element

all of heses

class 9​

Answer 1

Answer:

We all know that the chemical formula for water is H2O. How many times have we wondered why it is written as “H2O” and not something else? What is the reason for this particular formula? The answer to the above question is “Valency”. Let us know more about Valency and how it helps in determining a formula!

Answer 2

Answer:

the answer is all of these