Answer: Sulfur (S)Explanation: an ion with the exact same electron configuration as Ar has actually the same variety of electrons as Ar. Because the ion has actually a −2 charge, a neutral atom the the aspect has 2 under electrons 보다 Ar. The variety of electrons in a neutral atom is equal to the atom number. As soon as sulfur, S, gains two electrons, it has actually the exact same configuration as Ar. Sulfur has an electron construction of 1s²2s²2p⁶3s²3p⁴ (1s2 2s2 2p6 3s2 3p4) an interpretation it is 2 far from having a noble gas configuration (its fee is −2). So the ion"s configuration is 1s²2s²2p⁶3s²3p⁶ (1s2 2s2 2p6 3s2 3p6). Alternately, this have the right to be created as 3s²3p⁶ or .

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