Question

what is the vsepr geometry of the particle?

Explanation:

The VSEPR theory predicts molecular shapes based on electron - pair repulsion. In \(AsH_3\), arsenic (\(As\)) has 5 valence electrons. It forms 3 single bonds with hydrogen (\(H\)) atoms (using 3 valence electrons), and there is 1 lone pair of electrons remaining on \(As\). The electron - pair geometry is tetrahedral (3 bonding pairs + 1 lone pair). But the molecular geometry (VSEPR geometry considering only the positions of atoms) for a molecule with \(AX_3E\) (where \(A\) is the central atom, \(X\) is the surrounding atom, and \(E\) is the lone pair) is trigonal pyramidal.

Answer:

trigonal pyramidal