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Which of the following statements is true?

A. Protons are located outside the nucleus of an atom.
B. The nucleus of an atom contains protons and neutrons.
C. Electrons do not have mass.
D. Individual atoms can be seen with the naked eye.

User Mayrop
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2 Answers

5 votes
B. The nucleus of an atom contains protons and neutrons. 
User Liron Achdut
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B. The nucleus of an atom contains protons and neutrons.
User Johannes Wiesner
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