Question

Write the chemical formula of the following compounds ;

(B) Magnesium Sulfate

Answer 1

Procedure to write the chemical formula:

The criss-cross method is used to get the formula for magnesium sulfate.
Explanation:

The symbol, as well as the valency of the constituent elements, are necessary to write the compound's formula using the criss-cross approach.

• Because magnesium is metal and sulfur is non-metal, as a result, the compound is an ionic compound.
• When the constituent elements of magnesium sulfate are written with their valencies, the result is:

Symbol: $\mathrm{Mg}$ ${\mathrm{SO}}_4$

Valency: 2 2

It is cancelled because there is a negative charge and a positive charge of the same number.
When the symbol and valency are crosses multiplied, the formula is as follows: ${\mathrm{MgSO}}_4$.

Hence the chemical formula of magnesium sulfate is: ${\mathrm{MgSO}}_4$