Ions and Isotopes

Front

What is a cation?

Back

A cation is a positively charged ion that has lost one or more electrons.

Front

What charge do cations have?

Back

Cations have a positive charge (+).

Front

What are valence electrons?

Back

Valence electrons are the electrons located in the outermost energy level of an atom.

Front

How many valence electrons does Chlorine (Cl) have?

Back

Chlorine (Cl) has 7 valence electrons.

Front

What happens to an atom when it becomes an ion?

Back

An atom becomes an ion by either losing or gaining electrons.

Front

What charge do anions have?

Back

Anions have a negative charge (-).

Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.

Front

How do you calculate the number of neutrons in an isotope?

Back

Number of neutrons = Atomic mass - Atomic number.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms.