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

解释

Cl = 17 = 2, 8, 7.

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

评论 (0)

广告