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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Chemistry (CY)
Explain me...
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Priyanshu kumar
see, what happens over here is : in case of NH3+ the bond angle will be less as compared to that in NR3+ due to bulky nature of R group the repulsions increases in turn which increases the bond angle in NR3+. Now there is a relation between bond angle and %s character which is “As %s character increases bond angle also increases ( like in sp2 hybridization bond angle is 120 and %s is 33.3 whereas in sp bond angle is 180 and %s is 50)” Since % s increases thus the electronegetivty of N in NR3+ also increases thus it's a better -I group than NH3+
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Priyanshu kumar Best Answer
the trend changes on going down the group and here the electronegative factor and inductive effect factor decreases so dominance factor is here EN AND -I not steric repulsions
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Priyanshu kumar
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got shraddha
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Priyanshu kumar
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see when electronegativity is more then it tends to withdraw electron towards itself so - I effect increases and repulsion becomes more
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Priyanshu kumar
hope this much helps you shraddha🙏