Isotopes

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 determine the mass number of an isotope?

Back

The mass number of an isotope is the sum of the number of protons and neutrons in its nucleus.

Front

What is the mass number of Magnesium-25?

Back

25 (12 protons + 13 neutrons).

Front

What do isotopes of an element have in common?

Back

Isotopes of an element have the same number of protons and electrons.

Front

What is the difference between isotopes of the same element?

Back

The difference lies in the number of neutrons, which affects the mass number.

Front

How many neutrons are in Lithium-6?

Back

3 neutrons (6 mass number - 3 protons).

Front

How many neutrons are in Neon-22?

Back

12 neutrons (22 mass number - 10 protons).

Front

What is the neutron count for Nickel-59?

Back

31 neutrons (59 mass number - 28 protons).

Front

If an element has 15 protons and 16 neutrons, what is its isotope name?

Back

Phosphorus-31.

Front

What is the significance of isotopes in medicine?

Back

Isotopes are used in medical imaging and treatment, such as radioactive iodine in thyroid treatment.