Question

Define shielding effect and discuss its trend in periodic table

Answer 1

Answer:

The shielding effect explains that valence shell electrons are more easily removed from the atom. The nucleus can pull the valence shell in tighter when the attraction is strong and less tight when the attraction is weakened. The more shielding that occurs, the further the valence shell can spread out.

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Answer 2

The shielding effect actually describes the decrease in nuclear attraction to the electrons due to addition of shells. The electrons in the outer shells are shielded by electrons in the lower shells which in turn decreases attraction in Valence shell electrons.