JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Analyzing +4 | -1

Identify the least stable ion among the following

View answer and explanation

Correct option: B

B{e^ - }

Option B (

B{e^ - }

) is correct because Beryllium has a stable electronic configuration, and adding an electron makes it unstable.

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\mathrm{O}, \mathrm{O}^{2-}, \mathrm{F}

\mathrm{F}^{-}