Explain why the first ionization energy of Ca is greater than that of K, whereas the second ionization energy of Ca is lower than the second ionization energy of K (Select all that apply)
a. When K loses one electron, it achieves a noble gas configuration.
b. When K loses two electrons, it achieves a noble gas configuration.
c. Removal of a second electron from Ca requires much additional energy
d. Removal of a second electron from K requires
e. When Ca loses one electron, it achieves a noble gas configuration.
f. When Ca loses two electrons, it achieves a noble gas configuration.
Arrange the following atoms or ions in order of decreasing ionization enrgy From largest to smallest ionization energy
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