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 in its nucleus.

Front

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

Back

To calculate the number of neutrons in an isotope, subtract the atomic number (number of protons) from the mass number (total number of protons and neutrons).

Front

What is the mass number of an isotope?

Back

The mass number of an isotope is the total number of protons and neutrons in the nucleus of an atom.

Front

How many protons does the isotope Lithium-7 have?

Back

Lithium-7 has 3 protons.

Front

What is the relationship between isotopes and atomic mass?

Back

Isotopes contribute to the average atomic mass of an element, which is a weighted average of the masses of all its isotopes.

Front

How many neutrons does Carbon-12 have?

Back

Carbon-12 has 6 neutrons.

Front

What is the significance of isotopes in medicine?

Back

Isotopes are used in medicine for diagnostic imaging and treatment, such as radioactive iodine in thyroid treatment.

Front

How many neutrons does Bromine-80 have?

Back

Bromine-80 has 45 neutrons.

Front

What is the atomic number of an element?

Back

The atomic number of an element is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

How many neutrons does Neon-22 have?

Back

Neon-22 has 12 neutrons.