In order for a reagent to behave as a nucleophile it must have ...
A) an overall positive charge.
B) an overall negative charge.
C) a non-bonding electron pair.
D) a nitrogen or sulfur atom.

'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