A less stable carbonium ion rearranges to more stable carbonium ion . During this rearrangement the migrating group is or the group leaves as

A) Free radical B) Carbene C)Positively charged D) Negatively charged

'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