A) 19
B) 28
C) 35
D) 79
Answer: A
Explanation: Potassium has atomic number 19. That means each potassium atom has 19 protons in its nucleus.
A) 19
B) 28
C) 35
D) 79
Answer: A
Explanation: Potassium has atomic number 19. That means each potassium atom has 19 protons in its nucleus.
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