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Elements differ based on the number of _________.

2 Answers

12 votes

Answer:

protons

Step-by-step explanation:

The number of protons in an atom is the defining feature of an atom. It's what makes one element different from another. The number of protons in an atom is called its atomic number. Oxygen atoms have 8 protons.

User Sammy
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Electrons in the outer layer
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