A chemical formula is written using the symbol of the element, the formula of the radical and their valence. The following steps are involved inwriting a formula:
1. Write down the symbols of the elements/ions, which combine to form amolecule of the compound, side by side.
2. Write the valencies of the elements /ions as the superscript on the righthand side.
3. Interchange the valencies of the elements /ions and write as the subscript
4. The radical must be written in brackets, before the subscript is written.
5. Whenever applicable, simple ratios of the valencies must be written.
6. The final formula is written without any sign of the charge.
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Explanation:
yes these are the only things to be remembered while writing the formula
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To write the formula of a binary molecular compound, first use the prefixes in the name to tell you the subscript of each element in the formula. Then, write the correct symbols for the two elements with the appropriate subscripts.
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