As you move down a group in the Periodic Table, shielding increases because there are more electron shells surrounding the nucleus. These additional electron shells act as a barrier, reducing the attraction between the nucleus and outer electrons, thus increasing shielding.
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Yes, shielding increases as you move down a group in the periodic table.
Yes, Zeff (effective nuclear charge) generally increases as you move down a group in the periodic table due to the increase in the number of energy levels and electrons, which leads to greater shielding effects.
Lead is in the group 14 of the Periodic Table.
Electron shells increase in number as you move down a group in the periodic table. This is because the principal quantum number (n) increases for elements in the same period.
Electron shielding increases down a group in the periodic table, as more electron shells are added. This reduces the effective nuclear charge experienced by the outermost electron, making it easier for that electron to be removed or participate in chemical reactions.