A metallic ion Z 2+ with an inert gas structure contains 18 electrons. How many

CHEMISTRY
WAEC 2015

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

Correct Answer: A. 20



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