Isotopes and Isobars in Atomic Structure

The video tutorial explains the concept of isotopes and isobars. Isotopes are atoms of the same element with different mass numbers, exemplified by carbon-12, carbon-13, and carbon-14. Isobars are atoms of different elements that share the same mass number. The tutorial provides examples of isobars, including calcium, argon, and potassium, all having a mass number of 40. It discusses the atomic structure of these elements, highlighting the number of protons and neutrons, and explains how the mass number is calculated.

What is the term for atoms of the same element with different mass numbers?

• Isomers

• Isotopes

• Ions

• Isobars

Which of the following is an example of isotopes?

• Carbon 12, 13, and 14

• Calcium and Argon

• Potassium and Argon

• Hydrogen and Helium

What do we call atoms of different elements that have the same mass number?

• Isomers

• Isotopes

• Ions

• Isobars

How many protons does a calcium atom with a mass number of 40 have?

• 21

• 20

• 19

• 18

In a calcium atom with a mass number of 40, how many neutrons are present?

• 20

• 18

• 21

• 19

What is the atomic number of argon with a mass number of 40?

• 17

• 16

• 19

• 18

How many neutrons are in an argon atom with a mass number of 40?

• 21

• 22

• 20

• 23

How many protons does potassium have if its mass number is 40?

• 21

• 20

• 19

• 18

Which of the following elements is not an example of an isobar with a mass number of 40?

• Carbon

• Argon

• Calcium

• Potassium