Tamarah3053 Tamarah3053 23-08-2022 Chemistry Answered The sum of IE₁ through IE₄ for Group 4A(14) elements shows a decrease from C to Si, a slight increase from Si to Ge, a decrease from Ge to Sn, and an increase from Sn to Pb.(b) Suggest a reason for the deviations in Group 4A(14).