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

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Chemistry WAEC 2002

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

  • 16
  • 17
  • 18 checkmark
  • 19

The correct answer is: C

Explanation

Cl = 17 = 2, 8, 7.

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

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