which will get the preference while numbering the alkyl substituted carbon chain of alkyl group like (CH₃)₂CHCH₂CHCH₃ (the hydrogen has been removed from the underlined carbon)? The alkyl substituted carbon or the carbon from which the hydrogen has been removed.

'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