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The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?

The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?
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  • A 16
  • B 17
  • C 18
  • D 19
Correct Answer: Option C
Explanation:
Cl = 17 = 2, 8, 7.
Cl ion = Cl\(^-\) = 2, 8, 8 = 18.

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