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| 1. |
Account for the following: Atomic radius decreases from left to right in a period |
| Answer» Solution :As the atomic nwnber increases, the newelectron enters an inner cZ-orbital and'the nuclear CHARGE increases by one unit 'The.shielding EFFECT of Selectrons is not very effective. ,So the. increased nuclear charge attracts the outer electrons more RESULTING in DECREASE in size (lanthanoid contraction). | |