Lesson: Atomic Numbers and Mass Numbers

In this lesson, we will learn how to define and calculate the atomic numbers of elements and mass numbers of isotopes.

Sample Question Videos

Q1:

Neon has an atomic number of 10. How many protons are there in an atom of neon?

Q2:

How many protons are there in an atom of aluminum?

How many neutrons are there in an atom of aluminum?

How many electrons are there in an atom of aluminum?

Q3:

How many protons are there in an atom of fluorine?

How many neutrons are there in an atom of fluorine?

How many electrons are there in an atom of fluorine?

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