7.2C Covalent Lewis Structures

Front

What are valence electrons?

Back

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

Front

How many valence electrons does Phosphorus have?

Back

5

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms, typically between nonmetals.

Front

What is the molecular formula for Ammonia?

Back

NH₃

Front

How many double bonds are in CHCl₃?

Back

0

Front

In the Lewis structure of CH₄, how many unshared electron pairs surround the carbon atom?

Back

0

Front

What is the significance of Lewis structures?

Back

Lewis structures visually represent the arrangement of atoms and the distribution of electrons in a molecule.

Front

What is the octet rule?

Back

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

Front

What type of elements typically form covalent bonds?

Back

Covalent bonds typically form between nonmetals.

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.