Find the phase compositions for the following alloys: (a) 15 wt% sn–85 wt% pb at 100°c (212°f) (b) 25 wt% pb–75 wt% mg at 425°c (800°f) (c) 85 wt% ag–15 wt% cu at 800°c (1470°f) (d) 55 wt% zn–45 wt% cu at 600°c (1110°f) (e) 1.25 kg sn and 14 kg pb at 200°c (390°f) (f) 7.6 lbm cu and 144.4 lbm zn at 600°c (1110°f) (g) 21.7 mol mg and 35.4 mol pb at 350°c (660°f) (h) 4.2 mol cu and 1.1 mol ag at 900°c (1650°f)

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?