Argon Isotopes and Atomic Structure

This video tutorial explains how to determine the number of protons, neutrons, and electrons in argon isotopes, focusing on argon-40 and argon-36. It covers the concept of atomic number, which is consistent across isotopes, and how to calculate the number of neutrons using the mass number. The video also introduces nuclear notation for representing isotopes and discusses the prevalence of different argon isotopes based on their atomic mass.

What is the atomic number of argon?

• 16

• 17

• 18

• 19

How many protons does argon have?

• 16

• 19

• 17

• 18

In a neutral argon atom, how many electrons are present?

• 17

• 19

• 16

• 18

What is the mass number of the most common isotope of argon?

• 36

• 38

• 40

• 42

How many neutrons are in Argon-40?

• 24

• 22

• 18

• 20

What percentage of argon atoms are Argon-36?

• 0.5%

• 0.1%

• 0.3%

• 0.7%

How many neutrons are in Argon-36?

• 16

• 18

• 20

• 22

What is the nuclear notation for Argon-40?

• 36/20 Ar

• 40/20 Ar

• 40/18 Ar

• 36/18 Ar

What is the atomic number used in nuclear notation for argon?

• 18

• 17

• 16

• 19

How does the periodic table notation differ from nuclear notation?

• It uses a weighted average of isotopes

• It shows only the most common isotope

• It does not include atomic numbers

• It lists all isotopes separately