Consider the two ceramic atomic packing arrangements shown in the Figure. The radius of the anion is RA=0.2 nm. At i) the smallest stable cation size in I) and ii) the largest stable cation radius in II), what are the radii of the cations? What are these arrangements called?

Consider the two ceramic atomic packing arrangements shown in the Figure. The radius of the anion is RA=0.2 nm. At i) the smallest stable cation size in I) and ii) the largest stable cation radius in II), what are the radii of the cations? What are these arrangements called?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.

Question

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Consider the two ceramic atomic packing arrangements shown in the Figure. The radius of the anion is RA=0.2 nm. At i) the smallest stable cation size
in I) and ii) the largest stable cation radius in II), what are the radii of the cations? What are these arrangements called?
1)
C.
2RA
Select one:
O a. 0.225 RA, 0.732 RÃ: cubic, triangular
O b. 1.00 RA, 0.155 RA; hexagonal, triangular
0.225 RA, 0.732 R4; tetrahedral, octahedral
O d. 0.155 RA, 0.414 RA; triangular and tetrahedral
II)

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