VSEPR REVIEW

What molecular shape is predicted for a molecule with four bonding pairs and no lone pairs?

• Tetrahedral

• Trigonal planar

• Linear

• Octahedral

What does VSEPR stand for?

• Valence Shell Electron Pair Repulsion

• Valence Shell Energy Pair Repulsion

• Valence Shell Electron Pair Reaction

• Valence Shell Electron Pair Relativity

What molecular shape is predicted for a molecule with three bonding pairs and one lone pair?

• Trigonal planar

• Trigonal pyramidal

• Tetrahedral

• Bent

What is the significance of the VSEPR theory in chemistry?

• It helps predict the 3D arrangement of atoms in a molecule.

• It determines the boiling point of substances.

• It explains the color of chemical compounds.

• It identifies the types of chemical bonds present.

According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?

• Pairs of valence electrons.

• Nucleus of the atoms.

• Molecules of different compounds.

• Electrons in the outer shell.

What is the VSEPR theory used to predict?

• Molecular Shape

• Chemical Bonding

• Reaction Rates

• Electronegativity

What are bonding pairs of electrons?

• Electrons that are shared between two atoms to form a covalent bond.

• Electrons that are transferred from one atom to another to form an ionic bond.

• Electrons that exist in the outer shell of an atom and are not involved in bonding.

• Electrons that are found in the nucleus of an atom.

Tags

NGSS.HS-PS1-4

Pairs of electrons that are not used between bonding atoms are called-

• bonding pairs

• lone pairs

• free electrons

• valence electrons

A lone pair is defined as

• A pair of bonding electrons between two atoms.

• A pair of non-bonding electrons on the central atom.

• A single electron that is not shared with another atom.

• A pair of electrons that are shared equally between two atoms.

What is the effect of lone pairs on molecular geometry?

• Lone pairs have no effect on molecular geometry.

• Lone pairs occupy space and can alter the angles between bonding pairs.

• Lone pairs increase the bond length between atoms.

• Lone pairs only affect the molecular weight.