A) 80
B) 3
C) 10
D) 34
Answer: D
Explanation: Selenium has atomic number 34. That means each selenium atom has 34 protons in its nucleus.
A) 80
B) 3
C) 10
D) 34
Answer: D
Explanation: Selenium has atomic number 34. That means each selenium atom has 34 protons in its nucleus.
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