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Which of the following electron configurations indicates an atom with the highest ...

Which of the following electron configurations indicates an atom with the highest ionization energy?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 2,8,7
  • B 2,8,8,1
  • C 2,8,8,2
  • D 2,8,8,7
Correct Answer: Option A
Explanation:

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