P.S 7.2 Isotopes

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, resulting in different atomic masses.

Front

How do isotopes of the same element differ?

Back

Isotopes of the same element differ in the number of neutrons and, consequently, in their atomic mass.

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

How do you identify isotopes using symbols?

Back

Isotopes are identified by their chemical symbol followed by the mass number (e.g., Carbon-12 is represented as ¹²C).

Front

What is the relationship between protons, neutrons, and atomic mass in isotopes?

Back

The atomic mass of an isotope is primarily determined by the sum of its protons and 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 defines the element.

Front

How many neutrons are in Iodine-133?

Back

Iodine-133 has 80 neutrons (133 - 53 protons = 80 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 count of protons and neutrons in a specific isotope.

Front

Can isotopes have different chemical properties?

Back

Generally, isotopes have similar chemical properties because they have the same number of protons and electrons, but their physical properties can differ.

Front

What is the significance of isotopes in medicine?

Back

Isotopes are used in medicine for diagnostic imaging and treatment, such as radioactive iodine in thyroid treatment.