Molecular Geometry and Orbital Hybridization (5B) Practice Test

A formulation chemist studies hydrogen bonding in aqueous ammonia versus ammonium chloride solutions at the same total nitrogen concentration. In NH$_3$, nitrogen is bonded to three hydrogens and has one lone pair. Based on VSEPR theory, which combination best describes the electron-domain geometry and the molecular geometry of NH$_3$ around nitrogen?

A respiratory physiology study tracks nitric oxide (NO) as a signaling molecule in airway inflammation. NO is modeled as a diatomic species with a bond order between 2 and 3 depending on resonance description, but the experimental rotational spectrum indicates a linear molecule. Which statement is most consistent with the molecular geometry of NO?