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Which one of the following crystallizes in a metallic lattice? O A.C B. LICIO4 ОС.К D....
Metallic tantalum crystallizes in a body-centered cubic lattice, with one Ta atom per lattice point. If the edge length of the unit cell is found to be 328 pm, what is the metallic radius of Ta in pm? pm References Refer to the following phase diagram (not to scale!) for fluorine : 1.00 atm 0.00016 53.4 53.5 85.0 144.1 T Kelvin At a pressure of 1 atm, the temperature 53.5 K is called the The normal boiling point for F2...
Iron crystallizes in a body-centered cubic lattice. Calculate the density of Fe if the edge of a unit cell is 307 pm. A. 12.8 g/cm3 B. 6.40 x 106 g/cm3 C. 8.26 g/cm3 D. answer not listed E. 8.72 g/cm3 F. 7.84 g/cm3 G. 6.41 g/cm3
The metal potassium crystallizes in a body centered cubic unit cell with one atom per lattice point. When X-rays with λ = 1.937 Å are used, the second-order Bragg reflection from a set of parallel planes in a(n) potassium crystal is observed at an angle θ = 21.32°. If the spacing between these planes corresponds to the unit cell length (d = a), calculate the radius of a(n) potassium atom.
The metal iron crystallizes in a body centered cubic unit cell with one atom per lattice point. When X-rays with λ = 0.7107 Å are used, the second-order Bragg reflection from a set of parallel planes in a(n) iron crystal is observed at an angle θ = 14.35°. If the spacing between these planes corresponds to the unit cell length (d = a), calculate the radius of a(n) iron atom. _________Å
NaCl crystallizes in a variant of a face-centered cubic cell, with Cl- ions at the lattice points of the face-centered cube, and a sodium ion is on each edge of the cube and in its center. What is the total number of ions (Na+ and Cl-) that lie within the NaCl unit cell? A) 2 B) 4 C) 8 D) 6 E) 5 -If you can explain to me the reason for the correct answer. Thank you
QUESTION 9 Let X={a,b,c,d), f={(a,b),(6.a),(c,c),(d,d)}cXxX, and g={(a,m),(6,4),(c,b),(d,c)}cXxX. Find fog. a((aa),(b,d),(c,b),(d.c)) b.((a.d),(6.b),(c,a),(d.c)) c. ((a.a),(6.b),(c,c),(d,d)) d.((a.c),(b,d).(c.a),(d.b) QUESTION 10 Let X={a,b,c,d), f={(a,b),(b,a),(c,c),(d,d)}c XXX, and g={(a,d),(b,a),(c,b),(d,c)}cXXX. Find gog. a. ((a.a),(6,d),(c,b),(d,c)} b.([a,d),(6.b),(ca),(d.c)} c.{(a,a),(6.b),(c,c),(d,d)} d.((a.c),(b,d),(c,a),(d,b) QUESTION 11 What is the dominant operation in this algorithm? 1. Input the number of values n 2. Input the list of numbers x1, x2, ..., X 3. min = x 4. For i = 2 to n do 4.1. If xi < min then 4.1.1. min < x; 5. Output...
7) For the ionic solid AlzOs a) Determine its lattice energy using the appropriate Born-Haber cycle and the following values. All values in kJ/mol: IEi (A)-557.5:IE2 (A)-1817; IEs (A)-2745; IE(Al) 11580 E (0)-1314; IE2 (0) 3388; IEs (O)-5300 ΔΗ"a (O) =-141 (first electron affinity) ; ΔΗ'EA AH (Al) 330; AHa (O)-249;AH (Al Os)--1669.8 (o)- 798 (second electron affinity) b) Al:O, crystallizes in a corundum structure. How does the above lattice energy compare to the lattice energy determined by an electrostatic...
Which of the following compounds has the highest lattice energy? A) CaO B) CsI C) BaS D) NaF E) NaCl
Which element is most metallic? a. Sn b. S c. Si d. F Circle the largest atom in each pair. a. C or O b. Rb or Na c. C or Al d. For Se
Rank the following elements in order of increasing metallic character (from least metallic to most metallic): Ne, K, Mg, Rb, N 2. Which of the following groups of elements all have 7 valence electrons? Select one: Li / Na / K / Rb N / P / As / Sb C / Si / Ge / Sn F / Cl / Br / I B / Al / Ga / In O / S / Se / Te