Justify the statement.bigger size atoms have more shielding effect thus low ionization energy
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bigger size atoms have more shielding effect and thus low ionization energy.? Electrons in an atom can shield each other from the pull of the nucleus. ... The more shielding that occurs, the further the valence shell can spread out. As a result, atoms will be larger.
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Answer:When moving to the right of a period, the number of electrons increases and the strength of shielding increases. As a result, it is easier for valence shell electrons to ionize, and thus the ionization energy decreases down a group.
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