Which of the following cyclohexane conformations has the MOST energy (is the

LEAST stable)?

a. chair

b. half-chair

c. boat

d. twist-boat

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

 

Using above information

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Plz answer this query.....................................................................................................

how to represent the possible fischer projections for 2-bromohexane