According to Valence Shell Electron Pair Repulsion (VSEPR) Theory, the number of electron domains surrounding an atom will determine the:

• A. electronegativity
• B. type of chemical bond
• C. molecular geometry
• D. atomic mass

Answer: (C)

Verified step by step guidance

1. Understand that Valence Shell Electron Pair Repulsion (VSEPR) Theory is used to predict the shape of molecules based on the repulsions between electron pairs around a central atom.
2. Identify that the key concept in VSEPR theory is the number of electron domains (regions of electron density) around the central atom, which includes bonding pairs and lone pairs of electrons.
3. Recognize that these electron domains repel each other and arrange themselves as far apart as possible to minimize repulsion, which directly influences the spatial arrangement of atoms in the molecule.
4. Know that this spatial arrangement of atoms, determined by the number and arrangement of electron domains, is called the molecular geometry.
5. Conclude that according to VSEPR theory, the number of electron domains surrounding an atom determines the molecular geometry, not electronegativity, type of chemical bond, or atomic mass.