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(i) How do you calculate the possible valency of an element from the electronic configuration of its atoms? (ii) Calculate the valency of element X whose

atomic number is 9.


If The Element X has atomic No.9 so its Electronic Configuration Is 2,7 So to get Stable Electronic Configuration [Octet Rule 2,8] It has to gain One Electron So it has to receive One Electron So its Valency is -1

If An Element Is Donating Electron Den its Valency would be in Positive
If An Element Is Receiving Electron Den its Valency would be in Negative

Hope U Understand If Any Further Doubts Regarding To This Plz Consult Me
Thank You
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