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!

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

Questions: 10  |  Attempts: 5695   |  Last updated: Mar 2, 2019
  • 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:


Questions: 20  |  Attempts: 206   |  Last updated: Jan 29, 2013

Quiz checking the knowledge of how atomic number, protons, atomic mass, and neutrons are related.

Questions: 10  |  Attempts: 10   |  Last updated: Nov 22, 2018
  • 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:

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: 5   |  Last updated: Oct 11, 2018




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Atomic Number Questions & Answers


What is the atomic number for Helium?
It's 2 as first it's hydrogen then helium then no. 3 is lithenium
What is the atomic number of an ion with 5 protons, 5 neutrons, and a charge of 3+?
On the periodic table, each element is assigned an atomic number. Besides showing its placement on the periodic table, the atomic number shows the number of protons located in the center of the atom. In this case since the element has 5 protons in it
How many protons and electrons does carbon have if it has an atomic mass of 12 and 6 neutrons?
The answer to this is letter A. There is sometimes a need for electrons and protons to be equal when the given atom is neutral in charge. An atom has three atomic particles. The first one is the proton which has a positive charge. The second one is t
What is the correct number of protons, neutrons, and electrons, respectively if lithium has an atomic number of 3 and a mass number of 7?
3,4,3. Protons, neutrons, and electrons are the three basic parts of an atom. The electron is a negatively charged molecule that is located at the center of the atom in the nucleus. The neutron does not have any charge. The number of neutrons affect
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