Element Atomic Number Quiz

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Updated on July 03, 2019

1. Let's start with an easy one. Hydrogen is the most abundant element in the universe. The atomic number of hydrogen is:

1
2
3
4

2. Another important element is carbon, found in all organic molecules. How many protons are in an atom of carbon?

4
6
12
14

3. You need oxygen to breathe. What is the atomic number of oxygen?

6
8
9
12

4. The second most abundant element in the universe is helium. Do you know how many protons it has?

1
2
3
4

5. Iron has been known since prehistoric time. It is found in hemoglobin, magnets, and steel. What is its atomic number?

4
14
26
28

6. 70% of air is nitrogen. Ionized nitrogen produces green and violet aurora colors. Do you know its atomic number?

6
7
8
9

7. Boron is a metalloid, with properties of metals and nonmetals. It conducts infrared light. What is its atomic number?

4
5
13
14

8. Scandium is the transition metal that makes the blue color of the gemstone aquamarine. What is its atomic number?

20
21
30
31

9. Fluorine is the first halogen. Pure fluorine is a corrosive yellow gas. Do you know its atomic number?

7
8
9
10

10. Do you know how many protons are in an atom of lithium? It is the lightest of the metals.

1
2
3
4

Element Atomic Number Quiz

You got: % Correct. Atomic Bombed the Atomic Number Quiz

You didn't know many atomic numbers, but if you have a periodic table, it's easy to look them up. The atomic number is the integer number on the element tile. It represents the number of protons in an atom of an element and distinguishes one element from another.

Where can you go from here? Try a quiz that helps you learn the essential facts about atoms and how they work. Reviewing the list of element names, symbols, and atomic numbers is a good way to learn about atomic numbers, too. Making your own model of an atom will help the atomic number make sense.

Element Atomic Number Quiz

You got: % Correct. Average Atomic Number Knowledge

Good job! You knew some of the element atomic numbers. Remember, atomic numbers represent the number of protons in an atom, which is how you can tell one element from another. The number of neutrons and electrons doesn't need to be the same value.

If you're feeling uncertain about atomic numbers, review what they are and why they are important in chemistry. If you're ready to take another quiz, see if you can match element names and symbols. Maybe you're even ready to start memorizing the periodic table.

Would you like to try another quiz? See how well you understand periodic table trends or test your command of weird and interesting chemistry trivia.

Element Atomic Number Quiz

You got: % Correct. Clearly an Aspiring Chemist

Great job! You're clearly familiar with the element atomic numbers and what they mean. From here, you might want to brush up on how to use atomic numbers and other data from the periodic table to identify how many protons, neutrons, and electrons are in an atom.

Since you're good at chemistry, see if you can ace the 20 questions chemistry quiz. If you're ready for a change of pace, see how much you know about metals.