Isotope Review

Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons, resulting in a different atomic mass.

Front

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

Back

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

Front

What is the isotope symbol format?

Back

The isotope symbol is written as A (mass number) over Z (atomic number) followed by the element symbol, e.g., \( ^A_Z \text{Element} \).

Front

What is the atomic number of Lithium?

Back

The atomic number of Lithium is 3, which means it has 3 protons.

Front

How many neutrons does Lithium-6 have?

Back

Lithium-6 has 3 neutrons (6 - 3 = 3).

Front

What is the significance of isotopes in medicine?

Back

Isotopes are used in medicine for diagnosis and treatment, such as radioactive isotopes in cancer therapy.

Front

What is the difference between stable and unstable isotopes?

Back

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

Front

How many protons and neutrons does Phosphorus-32 have?

Back

Phosphorus-32 has 15 protons and 17 neutrons.

Front

What isotope has 33 electrons and 31 neutrons?

Back

The isotope is Arsenic-64 (64 As), which has 33 protons.

Front

Which isotope has the greatest number of electrons among the following: 211 Tl, Pb-213, 206 Hg, Lead-208, 207 Bi?

Back

207 Bi has 83 electrons.