Q46.Which one of the following statements about packing in solids is incorrect ? (1) Coordination number in bcc mode of packing is 8 (2) Coordination number in hep mode of packing is . 12 . (3) Void space in hcp mode of packing is 32%. (4) Void space in ccp mode of packing is 26%.
What This Question Tests
This question tests the knowledge of fundamental properties of different types of close packing in solids, specifically coordination number and void space percentage for BCC, HCP, and CCP structures.
Concepts Tested
📚 NCERT Sections This Tests
5.16 — Draw Figure To Show The Splitting Of D Orbitals In An Octahedral Crystal Field.
Chemistry Class 11 · Chapter 5
5.16 Draw figure to show the splitting of d orbitals in an octahedral crystal field.
14.1 — In An N-Type Silicon, Which Of The Following Statement Is True:
Physics Class 12 · Chapter 14
14.1 In an n-type silicon, which of the following statement is true: (a) Electrons are majority carriers and trivalent atoms are the dopants. (b) Electrons are minority carriers and pentavalent atoms are the dopants. (c) Holes are minority carriers and pentavalent atoms are the dopants. (d) Holes are majority carriers and trivalent atoms are the dopants.
14.2 — Which Of The Statements Given In Exercise 14.1 Is True For P-Type
Physics Class 12 · Chapter 14
14.2 Which of the statements given in Exercise 14.1 is true for p-type semiconductos.
📋 Question Details
- Chapter
- Solid State
- Topic
- Packing in solids
- Year
- 2013
- Shift
- 22 Apr Online
- Q Number
- Q46
- Type
- Conceptual
- NCERT Ref
- Class 12 Chemistry Ch 1: Solid State
More from this Chapter
Q84.Total volume of atoms present in a face-centre cubic unit cell of a metal is ( r is atomic radius) (1) 20 πr3 (2) 24 πr3 3 3 (3) 12 πr3 (4) 16 πr3 3 3 Q85. 18 g of glucose (C6H12O6) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100∘C is (1) 759.00 Torr (2) 7.60 Torr (3) 76.00 Torr (4) 752.40 Torr
Q55.In a compound atoms of element Y from ccp lattice and those of element X occupy 2/3rd of tetrahedral voids. The formula of the compound will be (1) X4Y3 (2) X2Y3 (3) X2Y (4) X3Y4
Q43.Copper crystallizes in fcc with a unit cell length of 361pm. What is the radius of copper atom ? (1) 108pm (2) 127pm (3) 157 pm (4) 181pm
Q44.Percentage of free space in cubic close packed structure and in body centred packed structure are respectively (1) 30% and 26% (2) 26% and 32% (3) 32% and 48% (4) 48% and 26%