Covalent Bonds and Lewis Structures

Front

What is a covalent bond?

Back

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

Front

What is a resonance structure?

Back

Resonance structures are different ways of drawing the same molecule that show the delocalization of electrons.

Front

Which molecule has resonance structures: NO2-, CO2, SO3, or H2O?

Back

NO2- has resonance structures.

Front

What type of bond exists between carbon and nitrogen in HCN?

Back

A triple bond exists between carbon and nitrogen in HCN.

Front

How many total valence electrons are participating in bonding in HCN?

Back

8 total valence electrons are participating in bonding in HCN.

Front

What is a covalent compound?

Back

A covalent compound is a chemical compound formed by the sharing of electrons between atoms.

Front

Which of the following is a covalent compound: H2S, KI, CaCl2, or MgO?

Back

H2S is a covalent compound.

Front

How many electrons can be used in the Lewis Structure for NO3-?

Back

24 electrons can be used in the Lewis Structure for NO3-.

Front

What is the purpose of a Lewis structure?

Back

A Lewis structure is used to represent the bonding between atoms in a molecule and the lone pairs of electrons.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.