Question

write down the steps involved in Deriving the chemical formula of various compounds

Answer 1

It includes three main steps.

1) Firstly write the symbols of the elements involved in a chemical formula.

2) Write the charges (oxidation states) on these elements.

3) In the last step the charges of the elements are crossed to each other and write them as subscript.

Example:

Iron hydroxide                   Fe           OH

                                             3+            -1

 Formula                                 Fe(OH)3  

Answer 2

Method involved in deriving chemical formulas for various compounds is called as Criss cross method

For example : Calcium Hydroxide

step 1: write the symbols for the atoms

Ca                  OH

step 2: write the valencies at the top of symbols

Ca²                     OH¹

Step 3 - Criss cross the valencies

Ca²                     OH¹

Ca ₁                     (OH)₂

so formula for calcium hydroxide is Ca(OH)2