Home
Class 12
CHEMISTRY
Metallic gold crystallizes in the fcc la...

Metallic gold crystallizes in the fcc lattice.
The length of the cubic unit cell is `a = 4.242 A`.
a. What is the closest distance between gold atoms?
b. How many "nearest neighbours" does each gold atom have at the distance calculated in `(a)`?
(c) What is the density of gold? (Aw of Au `= 197.0 g mol^(-1)`)
d. Prove that the packing factor for gold is `0.74`.

Text Solution

Verified by Experts

The correct Answer is:
(a) 2.878 Å, (b) 12, (c) 19.4 gm/cc
Promotional Banner

Topper's Solved these Questions

  • CLASSROOM PROBLEMS

    MOTION|Exercise Mole Concept|29 Videos

  • CLASSROOM PROBLEMS

    MOTION|Exercise Ionic Equilibrium|35 Videos

  • CLASSROOM PROBLEMS

    MOTION|Exercise Radioactivity|23 Videos

  • Chemical Kinetics

    MOTION|Exercise Exercise - 4 (Level - II) (SUBJECTIVE PROBLEM)|1 Videos

  • CLASSROOM PROBLEMS 1

    MOTION|Exercise THERMODYNAMICS|17 Videos

Similar Questions

Explore conceptually related problems

Metallic gold crystallises is fcc lattice .The length of the cubic unit cell is 4.242 Ã…. The closest distance between two gold atoms is:

Metallic gold crystallizes in body centred cubic lattice. The co-ordination numberof gold is ....

Xenon crystallizes in the face-centred cubic lattice and the edge of the unit cell is 620 pm. What is the nearest neighbour distance and what is the redius of xenon atom?

Lithium crystallizes in a body centred cubic lattice. How many next-nearest neighbours does each Li have?

A metal crystallizes in a body centred cubic lattice (bcc) with the edge of the unit cell 5.2Å . The distance between the next nearest neighbour is:

MOTION-CLASSROOM PROBLEMS -Solid State
  1. A sample of a crystalline solid scatters a beam of X-rays of wavelengt...

    Text Solution

    |

  2. Ice crystallizes in a hexagonal lattice. At the low temperature at whi...

    Text Solution

    |

  3. A compound formed by elements A and B has cubic structure in which ato...

    Text Solution

    |

  4. A cubic solid is made of two elements P and Q . Atoms of Q are at the ...

    Text Solution

    |

  5. MgO has a structure of NaCl and TiCl has the structure of CsCl. What a...

    Text Solution

    |

  6. An element has a bcc structure with a celledge of 288 pm. The density ...

    Text Solution

    |

  7. X-rays diffraction studies show that copper crystallizes in an fcc uni...

    Text Solution

    |

  8. Find the critical radius ratio for triangular void

    Text Solution

    |

  9. Two ions A^(o+) and B^(Θ) have radii 88 and 200 pm, respectively. In t...

    Text Solution

    |

  10. If NaCl is doped with 10^(-3) mol% GaCl(3), what is the concentration ...

    Text Solution

    |

  11. Br^- ions form a close packed structure. If the radius of Br^– ions is...

    Text Solution

    |

  12. X-ray diffraction studies show that edge length of a unit cell of NaCl...

    Text Solution

    |

  13. Iron occurs as BCC as well as FCC unit cell. If the effective radius o...

    Text Solution

    |

  14. Metallic gold crystallizes in the fcc lattice. The length of the cub...

    Text Solution

    |

  15. KBr crystallizes in NaCl type of unit cell. K^(+) radius = 1.33Å, Br^(...

    Text Solution

    |

  16. NH(4)Cl crystallises in a body centred cubic lattice with a unit cell ...

    Text Solution

    |

  17. A salt AB cystallises in the CsCl structure. The anions at the corners...

    Text Solution

    |

  18. In a CPS (close packed structure) of mixed oxides, it is found that la...

    Text Solution

    |