Home
Class 11
CHEMISTRY
The correct statement (s) for cubic clos...

The correct statement (s) for cubic close packed (ccp)three structure dimensional structure is (are) :

A

the number of the nearest neighbours of an atom present in the topmost layer is 12

B

The effeciency of atom packing is 74%

C

The number of octahedral and tetrahedral voids are 1 and 2 ,respectively

D

The unit cell length is `2sqrt(2)` times the radius of the atom

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
ccp or face centred cubic packing involves.
ABC ABC ABC (Pattern of packing )
Coordination number in topmost layer is six
Packing efficiency =74%
Z=4 in fcc unit cell
`therefore` Tetrahedral voids =8
Octahedral voids =4
`asqrt(2)=4r`
`a=2sqrt(2)r`
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER (SOLID STATE)

    OP TANDON|Exercise Asertion-Reason type Questions|7 Videos

  • STATES OF MATTER (SOLID STATE)

    OP TANDON|Exercise Matrix Matching Type Questions|5 Videos

  • STATES OF MATTER (SOLID STATE)

    OP TANDON|Exercise OBJECTIVE QUESTIONS (LEVEL -A)|77 Videos

  • STATES OF MATTER (GASES AND LIQUIDS)

    OP TANDON|Exercise Self Assess,ent|28 Videos

  • THE COLLOIDAL STATE

    OP TANDON|Exercise Self Assessment|21 Videos

Similar Questions

Explore conceptually related problems

The correct statement (s) for cubic close packed (ccp) three dimensional structure is (are)

In a closed packed structure

The correct statement about, CCP structure is

The three dimensional structure of DNA was elucidated

Percentage of free space in cubic close packed structure and in body centered packed structure are responsive:

OP TANDON-STATES OF MATTER (SOLID STATE)-Objective Questions (Level-B)
  1. Select the incorrect statement:

    Text Solution

    |

  2. The ionic radii of Rb^(+) and I^(-) are 1.46 and 2.16Å. The most proba...

    Text Solution

    |

  3. Perovskite is a mineral with the formula CaTiO(3) . Which of the posit...

    Text Solution

    |

  4. The number of atoms in 100 g an fcc crystal with density d = 10 g//cm^...

    Text Solution

    |

  5. In a ccp structure, the :

    Text Solution

    |

  6. Which of the following compounds represents an inverse 2:3 spinel stru...

    Text Solution

    |

  7. A solid solution of CdBr(2) in AgBr contains

    Text Solution

    |

  8. A crystalline solid is made of X, Y and Z elements. Atoms of X form fc...

    Text Solution

    |

  9. Which of the following patterns has voids fraction of 0.26?

    Text Solution

    |

  10. In face centred cubic unit cell, what fraction of edge is not covered ...

    Text Solution

    |

  11. First three nearest neighbour distance for body centred cubic lattice ...

    Text Solution

    |

  12. How many tetrahedral holes are occupied in diamond ?

    Text Solution

    |

  13. If the unit cell of a mineral has cubic close packed (ccp) array of ox...

    Text Solution

    |

  14. Which of the following crystals have 6:6 coordination ?

    Text Solution

    |

  15. Which of the following compounds represents an inverse 2:3 spinel stru...

    Text Solution

    |

  16. Which type of crystals contains only one Bravais lattice ?

    Text Solution

    |

  17. At which temperature , is a ferrimagnetic solid converted to a ferroma...

    Text Solution

    |

  18. In NaCl structure , all the :

    Text Solution

    |

  19. The density of a certain solid AB (formula mass =119) is 2.75 g//cm^(3...

    Text Solution

    |

  20. The correct statement (s) for cubic close packed (ccp)three structure ...

    Text Solution

    |