Answer
The structure of the compounds are as follows:
Work Step by Step
a) root name is 'pent' i.e. 5 C in a straight chain. Draw 5 C in a straight chain and numbering them from 1 to 5. 'yne' means one triple bond and '1-pentyne' means the triple bond is present in between C1 and C2 carbon. Now, '4-methyl' means one methyl group is present as a substituent at C4 position. Remaining valency of C atoms is filled with H.
b) root name is 'hex' i.e. draw 6 C in straight chain and numbering them from 1 to 6. Now, 'ene' means one double bond present and 1-hexene means the double bond is present in between C1 and C2 carbon. Now, '2,3,3-trimethyl' means three methyl groups are present at C2, C3 and C3 positions respectively. Remaining valency of C atoms is filled with H.
c) root name is 'dec' i.e. draw 10 C in a straight chain and numbering them from 1 to 10. 'ene' means one double bond present and '4-decene' means the double bond is present in between C4 and C5 carbon. Now, '3-ethyl' means one ethyl group is present at C3 position. Remaining valency of C atoms is filled with H.
