(a) Name the type of intermolecular forces existing in the molecules of `BCl_(3),NCl_(3)` and `NHCl_(2)`.
(b) Which of these is most likely to exist in the condensed state and which one is least likely?

Explanation

To solve the question, we will break it down into two parts as specified:

### Part (a): Identify the type of intermolecular forces in BCl₃, NCl₃, and NHCl₂.

1. **BCl₃ (Boron Trichloride)**:
- **Structure**: BCl₃ has a trigonal planar structure and is symmetrical.
- **Intermolecular Forces**: Due to its symmetrical shape, the dipole moment is zero. Therefore, the only intermolecular forces present are London dispersion forces (also known as van der Waals forces).

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