Bonding & valence 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 with other atoms.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons in order to have eight electrons in their valence shell, achieving a stable electron configuration.

Front

How many valence electrons does oxygen (O) have?

Back

Oxygen has 6 valence electrons.

Front

Which element has 2 valence electrons?

Back

Magnesium (Mg) has 2 valence electrons.

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.

Front

Which element will NOT be surrounded by an octet of electrons in a Lewis structure?

Back

Hydrogen will not be surrounded by an octet of electrons; it only needs 2 electrons.

Front

What is the significance of the number of valence electrons in bonding?

Back

The number of valence electrons determines how an atom can bond with other atoms, influencing the type of bonds formed (ionic, covalent, etc.).

Front

What is the maximum number of valence electrons an atom can have?

Back

The maximum number of valence electrons an atom can have is 8, according to the octet rule.

Front

What is the electron configuration of nitrogen (N)?

Back

The electron configuration of nitrogen is 1s² 2s² 2p³, indicating it has 5 valence electrons.

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.