The total number of constitutional isomers having the molecular formula `C_(3)H_(9)N` is .

Options

A. Five
B. four
C. two
D. three

Answer

B

Explanation

Primary amine `(RH_(2))`
`CH_(2)CH_(2)CH_(2)-NH_(2)and CH_(3)-overset(CH_(3))overset(|)CH_(2) - NH_(2)`
Secondary amine `(R-NH-R)`
`CH_(3)-NH-CH_(2)-CH_(3)`
Tertiary amine `(R-overset(R')overset(|)N-R'')and CH_(3)-overset(CH_(3))overset(|)N=CH_(3)` .