Which of the following atoms and ions are iso | vedclass

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(A) The atomic number of neon $(Ne)$ is $10$,so it has $10$ electrons.Isoelectronic species are those that have the same number of electrons.$F^{-}$ h

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$F^{-}$

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(A) The atomic number of neon $(Ne)$ is $10$,so it has $10$ electrons.Isoelectronic species are those that have the same number of electrons.$F^{-}$ has $9 + 1 = 10$ electrons.$O^{2-}$ has $8 + 2 = 10$ electrons.$Na^{+}$ has $11 - 1 = 10$ electrons.$Mg^{2+}$ has $12 - 2 = 10$ electrons.Among the given options,$F^{-}$ is isoelectronic with neon.

Which of the following atoms and ions are isoelectronic,i.e.,have the same number of electrons as the neon atom?

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