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  9. Q160

WBCS 2022 · Question 160 of 191

O²⁻ is isoelectronic with

Science - Chemistry

  1. AF⁻Correct
  2. BCl⁻
  3. CLi⁺
  4. DK⁺

Answer: A. F⁻

Explanation

Official WBPSC key (Series A): (A) F⁻. O²⁻ and F⁻ both have 10 electrons, so they are isoelectronic.

Source: WBCS (Exe) etc. (Prelim) 2022, Series A

← Q159View full paper (191 questions)Q161 →

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