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MHT CET202310 May 2023Morning ShiftChemistryStructure of AtomActual

Which of the following species is NOT isoelectronic with neon?

Options

  1. AO ²⁻
  2. BNa
  3. CMg ²⁺
  4. DAl ³⁺

Correct answer

B. Na

Step-by-step solution

Atoms and ions having the same number of electrons are isoelectronic. array |l|c| 1 |c| Species & No. of electrons Neon & 10 O ²⁻ & 8+2=10 Na & 11 Mg ²⁺ & 12-2=10 Al ³⁺ & 13-3=10 array

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