Valence Electrons

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 a stable atom typically have?

Back

A stable atom typically has 8 valence electrons, following the octet rule.

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 shells does an atom have if it has 3 energy levels?

Back

An atom with 3 energy levels has 3 shells.

Front

What is the maximum number of electrons that can occupy the first shell?

Back

The first shell can hold a maximum of 2 electrons.

Front

How many valence electrons does Magnesium have?

Back

Magnesium has 2 valence electrons.

Front

What is a Lewis dot model?

Back

A Lewis dot model is a diagram that shows the valence electrons of an atom as dots around the element's symbol.

Front

How many shells does an atom with 9 electrons have?

Back

An atom with 9 electrons typically has 3 shells.

Front

What is the significance of valence electrons in chemical reactions?

Back

Valence electrons determine how an atom will bond with other atoms during chemical reactions.

Front

How do you determine the number of valence electrons for elements in Group 1 of the periodic table?

Back

Elements in Group 1 have 1 valence electron.