Isotopes

Front

What are isotopes?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses.

Front

How do isotopes of an element differ?

Back

Isotopes differ in the number of neutrons and atomic mass, but they have the same number of protons and electrons.

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 is the mass number of an isotope?

Back

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

Front

How many protons does carbon-12 have?

Back

Carbon-12 has 6 protons.

Front

How many neutrons does carbon-14 have?

Back

Carbon-14 has 8 neutrons.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons in a specific isotope.

Front

Which isotope of lithium has 3 protons and 4 neutrons?

Back

Lithium-7.

Front

What is the significance of isotopes in medicine?

Back

Isotopes are used in medical imaging and treatment, such as radioactive isotopes in cancer therapy.

Front

How can isotopes be used in dating archaeological finds?

Back

Isotopes like carbon-14 are used in radiocarbon dating to determine the age of organic materials.