The ions X - and Y + are isoelectronic, each containing a total of 10
CHEMISTRY
JAMB 1991
The ions X-and Y+ are isoelectronic, each containing a total of 10 electrons. How many protons are in the nuclei of the neutral atoms of X and Y respectively?
- A. 10 and 10
- B. 9 and 9
- C. 11 and 9
- D. 9 and 11
Correct Answer: D. 9 and 11
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