What are the steps in writing a molecular compound?

Answer 1

First U have to write the symbols of elements that form the compound, for

example if we want to write the chemical formula of magnesium chloride:

1. Mg Cl

2. we have to write the valence of each element below it

Mg Cl

2 1

then, we switch the valences of each one

so, the chemical formula is going to be:

MgCl2

Answer 2

If you mean to find its molecular formula:

1. First you must obtain the empirical formula. Find the molar mass of the empirical formula.

2. The molar mass of the entire molecule must be given or its molecular formula cannot be find.

3. Put the molar mass given over the molar mass of the empirical formula.

4. Use this number (kind of like a scaler) to multiply by the entire empirical formula. This is the molecular formula.