Chemistry
How do the following vary on moving from left to right in the third period of the periodic table : (i) valence electrons and (ii) valency
Periodic Table
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Answer
(i) The number of valence electron successively increases by one as we move from left to right in the third period.
(ii) Valency firstly increase from 1 to 4 from element sodium (Na) to silicon (Si) and then reduces to zero from element phosphorus (P) till chlorine (Cl) as we move from left to right in the third period.
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