🤓 Based on our data, we think this question is relevant for Professor Wallace's class at LEHMAN-CUNY.
electron configuration of [Kr]
total # e- of ion = total # e- of Kr
Kr → neutral element
# e- = atomic number
# e- = 36
What element forms an ion with an electronic configuration of [Kr] and a -2 charge?
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Based on our data, we think this problem is relevant for Professor Wallace's class at LEHMAN-CUNY.