Isotopes 1

Front

What are isotopes?

Back

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

Front

How do isotopes of an element differ?

Back

Isotopes of an element differ in their mass number due to the different number of neutrons.

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

What happens to an atom if a proton is added or removed?

Back

If a proton is added or removed, the atom becomes a different element.

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 its nucleus.

Front

If an element has 33 protons, what is its atomic number?

Back

The atomic number is 33.

Front

What is the relationship between protons and neutrons in isotopes?

Back

Isotopes have the same number of protons but different numbers of neutrons.

Front

What is the significance of the atomic mass of an element?

Back

The atomic mass is a weighted average of the masses of all the isotopes of an element.

Front

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

Back

To find the number of neutrons, subtract the atomic number from the mass number.

Front

What is the symbol for lithium?

Back

The symbol for lithium is Li.