Which of the following statement is false to trisilylamine?

The lone pair of electrons occupy a p-orbital at right angles to the plane triangle and this overlaps with empty p-orbitals on each of the three silicon atoms resulting in $\mathrm{\pi }$ bonding statement is false for trisilylamine.

The bonding assertion is untrue for trisilylamine because the single pair of electrons occupies a p-orbital that is at an angle to the plane triangle and overlaps with unoccupied p-orbitals on each of the three silicon atoms.

Hence, option B is correct.