Question

question 29 (1 point)
what is the bond angle for nh3?
<109.5°
120°
180°
90°
question 30 (1 point)
in which molecule are all atoms located in a same plane? namely, which molecule is flat?

Explanation:

For \(NH_3\) (ammonia), the central nitrogen atom has four electron - pair domains (three bonding pairs and one lone pair). According to VSEPR (Valence - Shell Electron - Pair Repulsion) theory, the electron - pair geometry is tetrahedral (which has a bond angle of \(109.5^{\circ}\) for pure tetrahedral with four bonding pairs). But due to the repulsion from the lone pair (lone - pair repels bonding pairs more than bonding - pair repels bonding pairs), the bond angle in \(NH_3\) is less than \(109.5^{\circ}\).

Answer:

\(< 109.5^{\circ}\)