Lewis Dot Structures - Ionic and Covalent

Front

What is a Lewis Dot Structure?

Back

A Lewis Dot Structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

Front

What does the octet rule state?

Back

The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons, achieving a stable electron configuration.

Front

How many valence electrons does nitrogen have?

Back

Nitrogen has 5 valence electrons.

Front

What is the Lewis Dot Structure for ammonia (NH3)?

Back

The Lewis Dot Structure for ammonia shows nitrogen in the center with three hydrogen atoms bonded to it and one lone pair of electrons on nitrogen.

Front

How many unshared pairs of electrons does oxygen have in water (H2O)?

Back

Oxygen has 2 unshared pairs of electrons in water.

Front

What is the correct Lewis structure for phosphorus tribromide (PBr3)?

Back

The correct Lewis structure for PBr3 has phosphorus in the center bonded to three bromine atoms, with each bromine having three lone pairs.

Front

What type of bond is formed when electrons are shared between atoms?

Back

A covalent bond is formed when electrons are shared between atoms.

Front

What type of bond is formed when electrons are transferred from one atom to another?

Back

An ionic bond is formed when electrons are transferred from one atom to another.

Front

How many valence electrons are needed to satisfy the octet rule for most elements?

Back

Most elements need 8 valence electrons to satisfy the octet rule.

Front

What is a lone pair of electrons?

Back

A lone pair of electrons is a pair of valence electrons that are not shared with another atom and are not involved in bonding.