Multiple choice

Which of the following series represents the biggest jump between IE2 and IE3?

  1. 1s2, 2s2, 2p1

  2. 1s2, 2s2, 2p2

  3. 1s2, 2s2, 2p3

  4. 1s2, 2s2, 2p6, 3s1

  5. 1s2, 2s2, 2p6, 3s2
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E Correct answer
Explanation

The highest jump including IE2 and IE3 means that it should have two valence electrons. The electronic configuration 1s2, 2s2, 2p6, 3s2 corresponds to magnesium that has 2 valence electrons.

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