Arrange the elements in each of the following in order of decreasing shielding effect:

(a) Li, Na, KOrder: K > Na > Li.The shielding effect increases as you move down the group because there are more electron shells, leading to more shielding. (b) Cl, Br, IOrder: I > Br > Cl.The shielding effect increases as you move down the group due to additional electron shells. (c) Cl, BrOrder: Br … Read more