How many primary amines including stereoisomers are possible for the molecular formula `C_(4)H_(11)N` .

Options

A. 1
B. 2
C. 3
D. 4

Answer

D

Explanation

The general structural formula of a primary amine is `RNH_2`. Corresponding to 4 C atoms, 4 different alkyl groups are possible:
`underset("n-Butylamine")(CH_(3)CH_(2)CH_(2)CH_(2)NH_(2))" "underset("sec-Butylamine")(CH_(3)CH_(2)overset(CH_(3))overset(|)(C)H-NH_(2))`
`underset("Isobutylamine")(CH_(3)overset(CH_(3))overset(|)(C)HCH_(2)NH_(2))" "underset("tert-Butylamine")(CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C^(2))-NH_(2))`