Atomic Number Quizzes & Trivia

From hydrogen’s lonely little one to hassium’s hefty hundred and eight, the atomic number of an element tells you some important information about the substance under study.

What gives an element its specific atomic number – its number of protons, neutrons, or electrons? If I add one to the atomic number of neon, a gas, why do I get Na, a metal, in its place? And what does an atomic number have to do with how massive an atom of that element is? If you need to polish up your skills with the periodic table, or if you think you can already tell the atomic number for Mg from that of Mn, take our atomic number quiz and give yourself a chemistry challenge!

Top Trending Quizzes

Atomic Number Of The First 20 Elements On The Periodic Table Quiz

How easily can you tell the atomic number of the elements? Can you tell the atomic number of the first 20 elements on the periodic table? Try this quiz and test your knowledge regarding the nuclear charge number of a chemical...

Questions: 20 | Attempts: 7933 | Last updated: Jul 24, 2022

Quiz On Elements And Compounds Of Atom!

An atom is a primary piece of matter made up of protons, neutrons, and electrons called subatomic particles. The atom's center is known as the Nucleus, which carries the negative charge around which electrons flow. This quiz...

Questions: 10 | Attempts: 10312 | Last updated: Mar 22, 2022

Sample Question
If lithium has an atomic number of 3 and a mass number of 7, the correct number of protons, neutrons, and electrons, respectively, is:

3,4,3

4,3,3

3,3,4

4,4,3

Inside Of Atom - Atomic Number & Mass Quiz #2

Do you know anything about the number of atoms and packing efficiency? Packing fraction is the fraction of size in a crystal structure that is inhabited by constituent particles. The atomic packing factor of a unit cell is...

Questions: 10 | Attempts: 377 | Last updated: Mar 21, 2022

Sample Question
If lithium has an atomic number of 3 and a mass number of 7, the correct number of protons, neutrons, and electrons, respectively, is:

3,4,3

4,3,3

3,3,4

4,4,3

The Ultimate Atomic Numbers Quiz 11-20

Atoms of each element contain a characteristic number of protons in their nucleus. The number of the protons in each element is what is called its atomic number. The quiz below is designed to check whether you know the atomic...

Questions: 10 | Attempts: 265 | Last updated: Mar 21, 2022

A Quiz On Isotopes And Atomic Numbers

We welcome you to this super fun Isotopes and atomic numbers quiz! By definition, atomic number is an atom's total amount of protons. In contrast, an Isotope is a variation of the element with the same atomic number but a...

Questions: 10 | Attempts: 28 | Last updated: Nov 17, 2022

Sample Question
What's the atomic number of oxygen?

12

8

22

45