Isotopes 1

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 isotopes of an element differ from each other?

Back

Isotopes differ in the number of neutrons they contain.

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 are in Potassium-39?

Back

Potassium-39 has 20 neutrons.

Front

What is the relationship between the number of protons and neutrons in an isotope?

Back

The number of protons defines the element, while the number of neutrons can vary, resulting in different isotopes of that element.

Front

If an atom has 1 proton, 1 electron, and 1 neutron, what is its atomic number?

Back

The atomic number is 1.

Front

How many neutrons are in Nitrogen-16?

Back

Nitrogen-16 has 9 neutrons.

Front

What distinguishes carbon-12 from carbon-14?

Back

Carbon-12 and carbon-14 differ in the number of neutrons they contain.

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

How can you determine the number of neutrons in an isotope?

Back

Subtract the atomic number (number of protons) from the mass number.