The lattice constant of the unit cell of a-iron (has a bcc structure) is 0.287 nm. The number of atoms/mm2 (atoms per unit area) for the (110) plane is: OA. 2.46 X 10° atoms/mm² OB. 4.93 X 109 atoms/mm² OC. 0.86 X 10¹3 atoms/mm² OD. 1.72 X 1013 atoms/mm²

The lattice constant of the unit cell of a-iron (has a bcc structure) is 0.287 nm. The number of atoms/mm2 (atoms per unit area) for the (110) plane is: OA. 2.46 X 10° atoms/mm² OB. 4.93 X 109 atoms/mm² OC. 0.86 X 10¹3 atoms/mm² OD. 1.72 X 1013 atoms/mm²

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter8: Molecules And Materials

Section: Chapter Questions

Problem 8.63PAE

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Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.

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