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4. Atoms and Elements - Part 2 of 2!
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4. Atoms and Elements - Part 2 of 2!
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4. Atoms and Elements / Periodic Table: Main Group Element Charges / Problem 1
Problem 1
What does the atomic number of an element represent?
A
The number of protons in the nucleus
B
The number of neutrons in the nucleus
C
The number of electrons in the nucleus
D
The total mass of the atom
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