The electronic configurations of some neutral atoms are given below. Which of these will have the lowest ionization energy? 1. 1s² 2s² p⁶ 3s² 2.1s² 2s² p⁶ 3s¹ 3.1s² 2s² p⁵ 4.1s² 2s² p⁴
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2nd one has low I.E as removal of just one electron from 3s1 is done easily to attain stable configu of 1s2 2s2 2p6 *
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