A metallic ion Z2+ with an inert gas structure contains 18 electrons. How many protons are contained in this ion?
A.
20
B.
18
C.
16
D.
2
Answer: B
To see detailed solution to this question and thousands of other questions offline, download TestDriller SSCE. Practice rigorously for WASSCE, enjoy educational games, get chief examiners' reports, summary of WAEC literature books, compete with your peers, win prizes and more.