HOW TO MAKE FORMULAS OF 1-20 ELEMENTS PLS EXPLAIN IT BY VALENCY AND SYMBOL
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to make the formula we need to know the valency and then we to make chemical formula we need to have 2 elements when we know the valency of those elements then we need to cross multiply it
eg : Al aluminum valency 3
O oxide valency 2
Al3 O2
cross multiply , we get
Al2O3
eg : Al aluminum valency 3
O oxide valency 2
Al3 O2
cross multiply , we get
Al2O3
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