Which of the following best explains why ionization energies decrease when moving down the periodic table...?

within a group?


a) the radius of the atom increases


b) the shielding of the inner electrons decreases and the effective nuclear charge increases


c) the shielding of the inner electrons increases and the effective nuclear charge decreases


d) the radius of the atom decreases

Which of the following best explains why ionization energies decrease when moving down the periodic table...?
c) the shielding of the inner electrons increases and the effective nuclear charge decreases.
Reply:The correct answer is "A"


Moving down within a group on the periodic table increases the number of electron shells below the valence shell. Moving from left to right along a row of the periodic table increases the effective nuclear charge. Report It


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