define valency. what rule should be followed while writing a chemical formula?
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valency is the combining power of any.atom. while writing a chemical formula the atomic number and the.atomic mass number is.required
vibhutikhobragade:
can you give me an example
ex: Na + Cl gives nacl because the valency of both of the elements is two so they get cancel. this is where valences important and valency is determined by the electronic configuration which includes atomic number
hope it helped u
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The valency of an element is determined by the number of outer shell (valence) electrons.
The valency of polyatomic ions (such as SO42- ) is the charge on the ion.......
The valency of polyatomic ions (such as SO42- ) is the charge on the ion.......
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