Study Guide

Front

What is 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 electron pairs in the valence shell of the central atom.

Front

What shape do molecules with four bonding pairs of electrons have according to VSEPR theory?

Back

Molecules with four bonding pairs of electrons have a tetrahedral shape.

Front

What is the electron configuration of an atom with 20 electrons?

Back

1s2 2s2 2p6 3s2 3p6 4s2.

Front

What are the products of the reaction between sodium (Na) and chlorine gas (Cl2)?

Back

The products are sodium chloride (NaCl) and water (H2O).

Front

What is the shape of a molecule of difluoromethane (CH2F2) according to VSEPR theory?

Back

The shape of difluoromethane (CH2F2) is tetrahedral.

Front

What is the product of the reaction between silver nitrate (AgNO3) and sodium chloride (NaCl)?

Back

The product is silver chloride (AgCl).

Front

What does the term 'electron configuration' refer to?

Back

Electron configuration describes the distribution of electrons in an atom's orbitals.

Front

What is the significance of the octet rule in chemistry?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond formed when two atoms share one or more pairs of electrons.

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.