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How many dichloro derivatives (only cons...

How many dichloro derivatives (only constitutional isomers) of propane `(C_3H_5Cl_3)` are possible?

A

Six

B

Four

C

Five

D

Seven

Text Solution

Verified by Experts

The correct Answer is:
B
The two Cl's can be placed either on the same C or on different C's:
`underset(1,1-"Dischloropropane")(overset(3)(C)H_(3)overset(2)(C)H_(2)overset(1)(C)HCl_(2))" "underset(2,2-"Dichloropropane")(overset(3)(C)H_(3)overset(2)(C)Cl_(2)overset(1)(C)H_(3))`
`underset(1,2-"Dichloropropane")(overset(3)(C)H_(3)overset(2)(C)HCloverset(1)(C)H_(2)Cl)" "underset(1,3-"Dichloropropane")(Cloverset(3)(C)H_(2)overset(2)(C)H_(2)overset(1)(C)H_(2)Cl)`
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