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Questions and Answers
How many electrons does an atom with an atomic number of 8 have?
How many electrons does an atom with an atomic number of 8 have?
- 8 (correct)
- 18
- 12
- 16
What is the atomic number of an element with 5 protons?
What is the atomic number of an element with 5 protons?
- 20
- 10
- 15
- 5 (correct)
What is the total number of protons and neutrons in an atom with an atomic number of 20 and a mass number of 40?
What is the total number of protons and neutrons in an atom with an atomic number of 20 and a mass number of 40?
- 40
- 60 (correct)
- 80
- 20
