1. Tardigrade
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  3. Chemistry
  4. The anion O- is isoelectronic with

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Q. The anion $ O^- $ is isoelectronic with

AMUAMU 2013Structure of Atom

Solution:

The anion $\bar{O}(8 + 1 = 9$ electrons) is isoelectronic with $N^{2-} (7 + 2 = 9$ electrons). Isoelectronic species have same number of electrons. $(N^{3-} = 7 + 3 = 10e^-$, $F^- = 9 + 1 = 10e^-$ and $Ne = 10e^-)$.