An atom lost two valence electrons,resulting in a configuration of 1s²2s²2p⁶.The identity of this ion is:

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The given configuration after losing two valence electrons is 1s^2 2s^2 2p^6, which corresponds to the noble gas configuration of Neon (Ne). Since the atom lost two electrons, it has a +2 charge. The only option that correctly identifies a +2 charged ion with a configuration ending in 1s^2 2s^2 2p^6 is option D, which represents Magnesium (Mg^2+), as Magnesium in its neutral state has two valence electrons which, when lost, would result in the given configuration.

An Atom Lost Two Valence Electrons,resulting in a Configuration of 1s22s22p6.The

An Atom Lost Two Valence Electrons,resulting in a Configuration of 1s²2s²2p⁶.The