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1 vote
The atomic number appears

A- The number of protons in the nucleus of each atom.
B- The number of electrons in the nucleus of each atom.
C- The number of protons and electrons combined in each atom.
D- The number of elements in the periodic table.

2 Answers

2 votes
I think it’s a if I am not mistaken
User Joeann
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6 votes
A- the number of protons in the nucleus of each atom
User Dario Piotrowicz
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