Valence Electons and Octet Rule

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does Neon (Ne) have?

Back

8

Front

What ion does Boron (B) form when it loses 3 electrons?

Back

B⁺³, lost 3 electrons, it has 3 more protons than electrons now.

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, leading to greater stability.

Front

What ion does Magnesium (Mg) form when it loses 2 electrons?

Back

Mg⁺², loses 2 electrons, it has 2 more protons than electrons.

Front

What makes an atom neutral?

Back

An atom is neutral when the number of electrons equals the number of protons.

Front

Why do elements strive for a full valence shell?

Back

Elements strive for a full valence shell because it leads to stability.

Front

What happens to an atom when it gains electrons?

Back

When an atom gains electrons, it becomes negatively charged and is called an anion.

Front

What happens to an atom when it loses electrons?

Back

When an atom loses electrons, it becomes positively charged and is called a cation.

Front

How many valence electrons does Boron (B) have?

Back

3