Unit 4 Covalent Compounds

Front

What is a covalent bond?

Back

A covalent bond is an attraction between two nonmetals that share electrons.

Front

According to the octet rule, how many valence electrons do most elements need?

Back

Most elements need 8 valence electrons.

Front

What is the molecular geometry of a molecule with four bonded pairs and no lone pairs?

Back

The molecular geometry is tetrahedral.

Front

Is this a correct electron dot structure for oxygen (O): O::?

Back

False.

Front

How many pairs of electrons are shared in a triple bond?

Back

Three pairs of electrons are shared in a triple bond.

Front

What type of bond occurs between two nonmetals?

Back

A covalent bond occurs between two nonmetals.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full set of eight valence electrons.

Front

What is the difference between a single bond and a double bond?

Back

A single bond involves one pair of shared electrons, while a double bond involves two pairs of shared electrons.

Front

What is the electron dot structure?

Back

The electron dot structure represents the valence electrons of an atom as dots around the element's symbol.

Front

What is the shape of a molecule with two bonded pairs and two lone pairs?

Back

The shape is bent or angular.