Posted: September 12th, 2015
Lithium has an atomic number of 3 and a mass number of 7. Which of the following is the number of protons in a lithium atom? A.3 B. 4 C. 7 D. 12
Lithium has an atomic number of 3 and a mass number of 7. Which of the following is the number of protons in a lithium atom? A.3 B. 4 C. 7 D. 12
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