how to find valency of an element
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BY knowing the electronic configuration of a particular element we can know the valency of an element. Eg. the atomic no. of sodium(Na) is 11 so its electronic configuration is 2, 8, 1. So the last digit is 1 and it is its valency. the valency of sodium is 1.
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The valency of an element is the number of hydrogen atoms that can combine with or replace (either directly or indirectly) one atom of the element. ... For example, oxygen has six valence electrons, but its valency is 2. Some elements may have more than one combining power (or valency), while others have just one
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