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.

Front

How do you calculate the number of neutrons in an isotope?

Back

Number of neutrons = Mass number - Atomic number (number of protons).

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

What is Nickel-59?

Back

Nickel-59 is an isotope of nickel with 28 protons and 31 neutrons.

Front

How many neutrons does Bromine-80 have?

Back

Bromine-80 has 45 neutrons.

Front

What is the significance of isotopes in medicine?

Back

Isotopes are used in medical imaging and treatment, such as radioactive iodine in thyroid treatment.

Front

What is the difference between stable and unstable isotopes?

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Stable isotopes do not change over time, while unstable isotopes (radioisotopes) decay and emit radiation.

Front

What is Potassium-39?

Back

Potassium-39 is an isotope of potassium with 19 protons and 20 neutrons.

Front

What is the role of isotopes in dating archaeological finds?

Back

Isotopes, such as Carbon-14, are used in radiocarbon dating to determine the age of organic materials.