NCERT CLASS IX - Science Textbook
Chapter 4 - Structure of the Atom
How will you find the valency of chlorine, sulphur and magnesium?
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chlorine ka electronic configuration 2,8,7 hota h u know
so isko ek electrone chahiye octate pura kr ne k liye so
agr ham ise ek electron de denge to is ka octate pura ho jye ga
so valencey bhi iski - 1 hi ho gi
again sulphur ka electronic configuration 2,8,6 so agr ham ise 2 electron de den ge to is ka electoron pura ho jye ga to valency is ki ho gi -2
for magnesium ka electronic configuration 2,8,2 hota h so agr ham isse 2 ilectrons nikal le to iska octate pura ho jye ga to iski valacy bhi + 2 ho jye gi kyon ki ham isse electrons nikal rhe h na ki de de rhe h iss liye +2 ho gi
so isko ek electrone chahiye octate pura kr ne k liye so
agr ham ise ek electron de denge to is ka octate pura ho jye ga
so valencey bhi iski - 1 hi ho gi
again sulphur ka electronic configuration 2,8,6 so agr ham ise 2 electron de den ge to is ka electoron pura ho jye ga to valency is ki ho gi -2
for magnesium ka electronic configuration 2,8,2 hota h so agr ham isse 2 ilectrons nikal le to iska octate pura ho jye ga to iski valacy bhi + 2 ho jye gi kyon ki ham isse electrons nikal rhe h na ki de de rhe h iss liye +2 ho gi
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