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What does the atomic number of an atom tell us?

How much the atom weighs
The number of protons in the atom
Which column the element is in on the periodic table
The number of electrons it is likely to lose

User Knk
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2 Answers

13 votes

Answer:

the number of protons in the atom

Step-by-step explanation:

User Jwag
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7 votes

Answer:

the number of protons in the atom.

Step-by-step explanation:

User Kukiwon
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