Dimethyl hydrazine, (CH₃)₂N-NH₂, is a liquid at room temperature. How many atoms in this molecule have tetrahedral geometry?

Question

Quizplus · Accepted Answer

Dimethyl hydrazine, with the formula (CH3)2N-NH2, consists of two nitrogen atoms and two methyl groups (CH3) attached to the first nitrogen atom. The two carbon atoms in the methyl groups each have tetrahedral geometry, as they are bonded to three hydrogen atoms and one nitrogen atom. The nitrogen atoms do not have tetrahedral geometry; the first nitrogen is trigonal pyramidal (bonded to two carbons and one nitrogen), and the second nitrogen is also trigonal pyramidal (bonded to the first nitrogen and two hydrogens). Therefore, only the two carbon atoms exhibit tetrahedral geometry.

Dimethyl Hydrazine, (CH3)2N-NH2, Is a Liquid at Room Temperature

Dimethyl Hydrazine, (CH₃)₂N-NH₂, Is a Liquid at Room Temperature