Could you please explain how to write chemical formulaes using valency of elements?
Hi,
Writing Chemical Formulae
Step 1 : Write the symbol of a basic radical (element with a positive valency) on the left hand side and that of the acidic radical (element with a negative valency) on the right hand side.
Step 2 : Write the valency number/charge of each of the respective ions at the bottom of its symbol.
Step 3 : Interchange the valency number. Ignore the (+) and (-) sign.
Step 4 : Write the interchanged number.
Step 5 : Write the compound’s formula.
Step 6: Cross the reduced valencies. If 1 appears, ignore it. And if a group of atoms receives a valency number more than 1, enclose it within brackets.
Using the valency of ions, we can write the formulae of compounds.
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