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Write the structural formulae for the IU...

Write the structural formulae for the IUPAC names.
Pent-2-one

Text Solution

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(1) Pent stands for 5 carbon atoms in a chain. Number of carbon atoms in a chain as 1, 2, 3, … ,
`overset(1)C-overset(2)C-overset(3)C-overset(4)C-overset(5)C`
(2) 'one' stands for functional group `(-overset(O)overset("||")C-)` ketone. The number assigned for the ketone group is 2. Show the ketone group at `C_(2)`.
`underset(1)(C-underset(2)overset(O)overset("||")C-underset(3)C-underset(4)C-underset(5)C`
(3) Now satisfy the valencies of each carbon atom
`H-underset(H)underset(|)overset(H)overset(|)C-overset(H)overset("||")C-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-H-=CH_(3)-overset(O)overset("||")C-CH_(2)-CH_(2)-CH_(3)`
`CH_(3)-overset(O)overset("||")C-CH_(2)-CH_(2)-CH_(3)`
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