Question

give the answer fast​

Answer 1

Answer:

A chemical formula is a notation used by scientist to show the number and type of atoms present in a molecule using the atomic symbols and numerical subscripts.chemical formula describe the substance down to the accept atoms which make it up.

the rule of writing chemical formula are

• write the symbols with positive charge valency.
• write the valency of each atom on the top of its symbol.
• divide the valency number by their highest common factor is not a positive or negative radical.

Answer 2

Explanation:

A chemical formula tells us the number of atoms of each element in a compound.It contains the symbols of the atoms of the elements present in the compound as well as how many are there for each element in form of subscripts

rules for chemical formula:

1. write the symbols with positive charge valency
2. write the valency of each atom on the top of it's symbol
3. divide the valency number by their highest common factor ignore the positive or negative radicle