3 Questions
How many electrons does an atom with an atomic number of 8 have?
8
What is the atomic number of an element with 5 protons?
5
What is the total number of protons and neutrons in an atom with an atomic number of 20 and a mass number of 40?
60
Test your knowledge of atomic structure in chemistry. Answer questions about the atomic number, number of protons and neutrons, and electrons in different elements.
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