Using only the periodic table, rank each set of main-group elements in order of decreasing atomic size and explain your answer: K, Ga, Ca Read more Read less
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Using only the periodic table, rank each set of main-group elements in order of;
a. K, Ga, Ca: decreasing atomic size
b. I, Xe, Cs: decreasing first ionization energy
c. P, Si, N: increasing atomic radius
d. Kr, He, Ar: increasing electron affinity
e. Kr, Rb, Br: decreasing electronegativity
![Question 4 A charge +q is suspended a distance d/2 above the centre of a flat square surface with side-length d. (a) Can the electric flux through the square surface be calculated using ΦE = E→⋅A→? Explain your answer. (b) Calculate the electric flux through the square surface using Gauss's law, and explain your reasoning. Question 5 Four identical charges, each with charge q, have been placed on the corners of a square with side-length L. How much work would you need to perform in order to move the charges to the corners of a square with side-length 3L? Answer: Wex = −14πϵ0 q2 L23[4+2]](https://www.doubtrix.com/uploads/editor/0992358823HYdbvYMJwn.jpg)