Valence Electrons and Lewis Dot Structure

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 Sodium (Na) have?

Back

Sodium (Na) has 1 valence electron.

Front

What is the significance of having 8 valence electrons?

Back

Having 8 valence electrons (octet) makes an atom more stable and less reactive.

Front

What happens to an atom when it gains an electron?

Back

When an atom gains an electron, it becomes negatively charged (anion).

Front

What happens to an atom when it loses an electron?

Back

When an atom loses an electron, it becomes positively charged (cation).

Front

How many valence electrons does Chlorine (Cl) have?

Back

Chlorine (Cl) has 7 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

How do you determine the number of valence electrons for an element?

Back

The number of valence electrons can be determined by the group number of the element in the periodic table.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of 8 electrons.

Front

How many valence electrons does Aluminum (Al) have?

Back

Aluminum (Al) has 3 valence electrons.