WBCS.LIVE practice question

Mg2+ is isoelectronic with

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Ca2+
  2. Na+
  3. Zn2+
  4. Cu+

Correct answer and explanation

Correct answer: Na+

Explanation: āœ… Correct Answer: B) Na+ šŸ“š Explanation: Isoelectronic species are atoms or ions that have the same number of electrons. Magnesium (Mg) has 12 electrons, so Mg2+ has 10 electrons. Sodium (Na) has 11 electrons, so Na+ also has 10 electrons. Therefore, Mg2+ and Na+ are isoelectronic.