Question

question 8 (1 point)
the dominant type of intermolecular force in a sample of ncl₃ is
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covalent
dipole
dispersion
ionic
hydrogen bonding

Explanation:

• Covalent and ionic are types of intramolecular forces (bonds), not intermolecular forces. So we can rule out covalent and ionic options.
• Hydrogen bonding occurs when \(H\) is bonded to \(N\), \(O\), or \(F\). In \(NCl_3\), there is no \(H\) atom, so hydrogen bonding is not present.
• \(NCl_3\) has a trigonal - pyramidal shape. The \(N - Cl\) bonds are polar (due to the difference in electronegativity between \(N\) and \(Cl\)). The overall molecule is polar. Dipole - dipole forces are the dominant intermolecular forces in polar molecules. Dispersion forces are present in all molecules, but in polar molecules like \(NCl_3\), dipole - dipole forces are stronger than dispersion forces.

Answer:

B. dipole