Arrangement of (CH₃)₃- C -, ( CH₃)₂ – CH -, CH₃- CH₂- when attached to benzyl or an unsaturated group in increasing order of inductive effect is

(a) (CH₃)₃– C - _3­)₂ – CH – CH₃₂

(b) CH₃ – CH₂ - ₃)₂ – C-₃)₃ –C –

(c) (CH₃)₂ – CH - ₃)₃ - C -₃, -CH₂

(d) (CH₃)₃ – C -₃ – CH₂–(CH₃)₂ – CH-

'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