AP Chemistrymediummcq1 pt
For calcium (Z = 20), between which successive ionization energies is the largest jump expected?
A.Between the 2nd and 3rd
B.Between the 1st and 2nd
C.Between the 10th and 11th
D.Between the 18th and 19th
Explanation
Core Concept
Calcium has two valence 4s electrons, removed with modest energy. The third electron comes from the filled 3p core, requiring a large jump — the classic Group 2 signature.
Correct Answer
ABetween the 2nd and 3rd
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