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WAEC - Chemistry (2002 - No. 14)

The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?
16
17
18
19

Тайлбар

Cl = 17 = 2, 8, 7.

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

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