Front

What is an isotope?

Back

An isotope is an atom of the same 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

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 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 protons does Sodium (Na) have?

Back

Sodium has 11 protons.

Front

What is the mass number of Sodium-24?

Back

The mass number of Sodium-24 is 24.

Front

How many neutrons are in Sodium-24?

Back

Sodium-24 has 13 neutrons.

Front

What is the difference between isotopes of the same element?

Back

Isotopes differ in the number of neutrons, which results in different mass numbers.

Front

What is Copper-63?

Back

Copper-63 is an isotope of copper with 29 protons and 34 neutrons.

Front

Where are neutrons located in an atom?

Back

Neutrons are located in the nucleus of an atom.