from where(INDUCTIVE EFFECT) this series is derived (CH3)3C > (CH3)2CH > (CH3)1CH2 > CH3 and why it is REVERSE in hyperconjugation!??

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane