What fraction of one edge centred octahedral void lies in one unit cell of fcc? 
1. \( 1 \over 12\) 2. \( 1 \over 2\)
3. \( 1 \over 3\) 4. \( 1 \over 4\)
Subtopic:  Voids, Radius Ratio & Coordination Number |
From NCERT
NEET - 2023
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How many number of tetrahedral voids are formed in 5 mol of a compound having cubic close packed structure? (Choose the correct option)
1. \(1.550 \times10^{24}\) 2. \(3.011 \times10^{25}\)
3. \(3.011 \times10^{24}\) 4. \(6.022 \times10^{24}\)
Subtopic:  Voids, Radius Ratio & Coordination Number |
From NCERT
NEET - 2023
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The number of tetrahedral and octahedral voids in hexagonal primitive unit cell are respectively:

1. 2, 1

2. 12, 6

3. 8, 4

4. 6, 12

Subtopic:  Voids, Radius Ratio & Coordination Number |
 67%
From NCERT
NEET - 2021
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NEET 2023 - Target Batch - Aryan Raj Singh
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A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75 % of octahedral voids. The formula of the compound is:

1. C3A4

2. C2A3

3. C3A2

4. C4A3

Subtopic:  Voids, Radius Ratio & Coordination Number |
 51%
From NCERT
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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