Isotopes - Practice

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

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

Back

Number of neutrons = Mass number - Atomic number.

Front

What is the mass number of an isotope?

Back

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

Front

What is the atomic number of an element?

Back

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

Front

How many neutrons does the isotope 89Kr have?

Back

53 neutrons.

Front

What isotope has 9 protons and 9 neutrons?

Back

Fluorine-18.

Front

How many protons does the isotope of titanium with mass number 48 have?

Back

22 protons.

Front

What isotope has 76 protons and 114 neutrons?

Back

Osmium-190.

Front

How many neutrons does Fe-56 have?

Back

30 neutrons.

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.