The molecule in question is borane, $\mathrm{BH}_{3}$.
Step 2: Determine the Type of Molecule
Borane ($\mathrm{BH}_{3}$) is a small, nonpolar molecule. It has a trigonal planar structure with boron at the center and three hydrogen atoms symmetrically arranged around it.
Step 3: Identify Possible Intermolecular Forces
For nonpolar molecules like $\mathrm{BH}_{3}$, the primary intermolecular force is London dispersion forces (also known as van der Waals forces). These forces arise due to temporary dipoles created when electrons move around the nucleus.
Final Answer
The intermolecular forces present in $\mathrm{BH}_{3}$ are \(\boxed{\text{London dispersion forces}}\).