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

Chemistry
WAEC 2002

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

  • A. 16
  • B. 17
  • C. 18
  • D. 19
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Correct Answer: Option C
Explanation

Cl = 17 = 2, 8, 7.

Cl ion = Cl\(^-\) = 2, 8, 8 = 18.


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