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4. Atoms and Elements - Part 1 of 2
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4. Atoms and Elements - Part 1 of 2
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4. Atoms and Elements / Ions (Simplified) / Problem 11
Problem 11
What does the atomic number of an element represent?
A
The number of electrons in the outer shell.
B
The number of neutrons in the nucleus.
C
The total number of protons and neutrons.
D
The number of protons in the nucleus.
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