How to find valency of an element using EC
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using 2,8,8 rule ... let me explain with examples
1. the atomic number of oxygen is 8
therefore EC is 2,6.... to reach 8 two more electrons are needed therfore valrncy is two
similarly atomic number of sodium is 11 therefore ec is 2,8,1 therefore it can give 1 electron to reach 2,8 so valency is 1
1. the atomic number of oxygen is 8
therefore EC is 2,6.... to reach 8 two more electrons are needed therfore valrncy is two
similarly atomic number of sodium is 11 therefore ec is 2,8,1 therefore it can give 1 electron to reach 2,8 so valency is 1
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