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What is the height of an HCP unit cell?

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Important Questions on Solid State

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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-1>Q 40
What is the number of atoms in a unit cell of face-centred cubic crystal?
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-1>Q 41

Which of the following shaded plane in fcc lattice contains arrangement of atoms as shown by circles:

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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-1>Q 42
Copper crystallises in a structure of face-centred cubic unit cell. The atomic radius of copper is 1.28 A°. What is axial length on an edge of copper?
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-1>Q 43
The maximum percentage of the available volume that can be filled in a face-centred cubic system by an atom is ________. 
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-1>Q 44
In a face centred cubic lattice, what is the number of nearest neighbours for a given lattice point?
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-1>Q 46
If the anions A form hexagonal closest packing and cations C occupy only 2/3 octahedral voids in it, then the general formula of the compound is
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-1>Q 47
You are given 4 identical balls. What is the maximum number of square voids and triangular voids (in separate arrangements) that can be created?
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-1>Q 48

The empty space between the shaded balls and hollow balls as shown in the diagram is called:

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