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Why doesnt shielding effect affect the trend of decreasing atomic size along a period?
Why doesn't shielding effect affect this trend?
The shielding effect occurs when electrons in the inner energy levels of an atom repel electrons in the outer energy levels, reducing the effective nuclear charge experienced by the outer electrons. However, this effect is constant along a period and does not change the trend of decreasing atomic size, which is largely due to the increasing positive charge in the nucleus as the atomic number increases.