Question

Q	A
A-1	1/8
A-2	1
A-3	8r^3
A-4	2r
A-5	1.91
A-6	6

Q	A
B-1	1
B-2	2
B-3
B-4
B-5	2.94
B-6	8

Q	A
C-1	1/2
C-2	4
C-3
C-4
C-5	1.91
C-6	6

Q	A
E-1	Both the sphere and hexagonal will be 12
E-2	It will be
E-3	You can’t pack anything better than hexagonal and cubic

Q	A
F-1	¼ Na and 1 cubic, 6 ½ Cl, unit cell 1/8
F-2	Na ¼ (12) +1= 4 Na Cl ½ 96) + 1/8 (8)= 4 Cl
F-3	2d because it is its double
F-4	Ions of Na=6 , and ions of Cl=6

the first image is the questions. it is one question, but has more htan one part

uniu une ions structure? X-ray diffraction studies show that metallic lead crystallizes in a face-centered cubic structure. The edge length a of the unit cell is 4.94A. Calculate the radius in A of a lead atom calculate the density of metallic lead. Compare your answer with the experimental value obtained from a Handbook.