Ions and Valence Electrons

Front

What are valence electrons?

Back

Valence electrons are the electrons found in the outermost energy level of an atom, which are involved in chemical bonding.

Front

How many valence electrons do atoms in Group 16 gain to form a -2 charge?

Back

Atoms in Group 16 gain 2 electrons to form a -2 charge.

Front

What do isotopes have in common?

Back

Isotopes have the same number of protons but different numbers of neutrons.

Front

What distinguishes ions from neutral atoms?

Back

Ions have the same number of protons but different numbers of electrons.

Front

How many valence electrons are needed to fulfill the octet rule?

Back

8 valence electrons are needed to fulfill the octet rule.

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

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

What charge do cations carry?

Back

Cations carry a positive charge due to the loss of electrons.

Front

What charge do anions carry?

Back

Anions carry a negative charge due to the gain of electrons.

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.