VSEPR Flashcard

Front

What is the VSEPR theory?

Back

VSEPR (Valence Shell Electron Pair Repulsion) theory is a model used to predict the geometry of individual molecules based on the repulsion between the electron pairs in the valence shell of the central atom.

Front

What is resonance in chemistry?

Back

Resonance is a concept used to describe the delocalization of electrons in molecules where the bonding cannot be expressed by a single Lewis structure.

Front

What type of bond is formed between two nonmetals?

Back

Covalent bond.

Front

What is the geometry of a molecule with two bonding pairs and no lone pairs?

Back

Linear.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of bond where electrons are shared unequally between two atoms, resulting in a molecule with a slight electrical dipole moment.

Front

What is the molecular geometry of water (H2O)?

Back

Bent.

Front

How does bond strength change with the number of covalent bonds?

Back

As the number of covalent bonds between two atoms increases, the bond strength increases.

Front

What is the significance of electronegativity in bond formation?

Back

Electronegativity is a measure of an atom's ability to attract and hold onto electrons; it influences whether a bond will be ionic, polar covalent, or nonpolar covalent.

Front

What is the boiling point trend in ionic compounds compared to covalent compounds?

Back

Ionic compounds generally have higher boiling points than covalent compounds due to the strong electrostatic forces between ions.