QUESTION 28. Which of the following atoms has the highest ionization energy? As Ge Ca Br K QUESTION 24.Which electron configuration is impossible? 1s22s22p63s23p6 1s22s22p63s23p34s1 1s22s22p62d6 1s22s22p63s23p64s1 1s22s22p63s23p4

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