Consider the following electron configurations to answer the questions that follow: (i) 152 252 2p6 351 (il). 152 252 21 6 352 (ili) 152 252 20 6 352 3p1 (iv) 152 252 206 352 3p4 (V) 152 252 2p6 352 3p5 The electron configuration belonging to the atom with the highest second ionization energy is

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