Because two atomic centres can only create a linear molecule.
Tetrahedral.
A. The geometry it will have
A^6
trigonal planar
Molecular orbital theory(MOT) provides information about both molecular shape and molecular bonding.
Tetrahedral.
The position of bonding atoms is determined by electron pair repulsion.
A. The geometry it will have
A^6
Ax5
AX3
I don't know what "H'M" is supposed to be, so the question cannot be answered. Any binary compound is linear, because there's no other option; one doesn't really need VSEPR to predict that.
VSEPR stands for Valence Shell Electron Pair Repulsion, and it describes how valence (bonding) electrons are arranged around an atom, and how they are used in creating a bond. This then can be used to help predict the GEOMETRIC SHAPE of the molecule being formed.
It has a linear shape
The VSEPR theory allows us to determine the molecular geometry of a molecule based on the number of electron pairs around the central atom. It helps predict the shape of molecules by minimizing electron pair repulsion. This theory is useful in understanding the spatial arrangement of atoms in molecules and their properties.
trigonal planar
SiCl2Br2 would take a tetrahedral shape according to the VSEPR theory.