Home
Class 12
CHEMISTRY
CsBr crystallzes in a body centred cubgi...

CsBr crystallzes in a body centred cubgic lattice . The unit cell length is `436.6` pm. Given that the atomic mass of `Cr= 133` and that of `Br = 80` amu and Avogadro number being `6.02 xx 10 ^(23) mol ^(-1).` The density of CsBr is

A

`0. 425 g cm ^(-3)`

B

`8.25 g cm ^(-3)`

C

`4.25 g cm ^(-3)`

D

`42.5 g cm ^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • UNIT TEST 4

    MODERN PUBLICATION|Exercise QUESTIONS|60 Videos

  • UNIT TEST 6

    MODERN PUBLICATION|Exercise Questions|60 Videos

Similar Questions

Explore conceptually related problems

Copper crystallizes into a fcc lattice with edge length 3.61 xx 10^(-8) cm. Calculate the density of the crystal (Atomic mass of copper = 63.5 g/mol and Avogadro number = 6.022 xx 10^(23) mol^(-1) )

Copper crystallises with face-centred cubic unit cell. If the radius of copper atom is 127.8 pm, calculate the density of copper metal. (Atomic mass of Cu = 63.55 g/mol and Avogadro's number N_(A) = 6.02 xx 10^(23) mol^(-1) )

Chromium metal crystallizes with a body-centred cubic lattice. The length of the unit cell edge is found to be 287 pm. Calculate the atomic radius. What woulds be the density of chromium in g cm^(-3) ?

Calcium metal crystallises in a face centered cubic lattice with edge length of 0.556nm. Calculate the density of the metal. [Atomic mass of calcium 40 g/mol] [N_(A) = 6.022 xx 10^(23) " atoms/ mol"]

b) An element crystallizes in a foc lattice. The edge length of the unit cell is 400 pm. Calculate the density of the unit cell. ("molar mass"="60 g mol"^(-1)) ("Avogadro number"=6.02 xx 10^(23))

Silver metal crystallises with a face centred cubic lattice. The length of unit cell is formed to be 4.077 xx 10^(-8) cm. Calculate atomic radius and density of silver. (Atomic mass of Ag = 108 u, N_(A) = 6.023 xx 10^(23) mol^(-1) ).

Silver crystallizes in CCP lattice. The edge length of its unit cell is 408.6 pm. Calculate density of silver (atomic mass of silver is 107.9)

(a) Sodium metal crystallizes in bcc structure. Its unit cell edge length is 420 pm. Calculate its density. (Atomic mass of sodium = 23 u, N_(A) = 6.022 xx 10^(23) mol^(-) ). (b) What is Frenkel defect ? How does it affect the density of a crystal ?

Lithium metal has a body centred cubic lattice structure with edge length of unit cell 353 pm . Calculate the density of the lithium metal. [Given : Atomic mass of Li = 7 g mol^(-1) , N_A = 6.022 xx 10^(23) atom mol^(-1) )

A metal has face centred cubic arrangement . If length of the edge of the cell is x pm and M is its atomic mass, then density will be equally to ( N_(0) is Avogadro number )

MODERN PUBLICATION-UNIT TEST 5 -QUESTIONS
  1. 5 ml of 1 NHCl, 20 ml of N/2 H (2) SO (4) and 30 ml of N /3 HNO (3) ar...

    Text Solution

    |

  2. Given E ^(@)(Cr ^(3+)|Cr)=-0.72V and E ^(@)(Fe ^(2+)|Fe)=-0.42 V. The ...

    Text Solution

    |

  3. A solution oof nickel sulphate in which nickel rod is dipped is dilute...

    Text Solution

    |

  4. The equivalent conductance of M/32 solution of a work monobasic acid i...

    Text Solution

    |

  5. When ln k is poltted against 1/T, the slope was found to be - 10.7 xx ...

    Text Solution

    |

  6. For the first order reaction the half life period is (if k is rate con...

    Text Solution

    |

  7. For the first order reaction, time required for 99% completion is :

    Text Solution

    |

  8. In the reversible reaction 2NO (2) hArr N(2)O(4), the rate of disappea...

    Text Solution

    |

  9. A metal crystallized in fcc lattcie and edge of the unit cell is 620 p...

    Text Solution

    |

  10. A posible mechanism for the reaction : 2NO + 2H(2) to N (2) + 2H(2) ...

    Text Solution

    |

  11. A radioactive isotope has half life of 27 days. Starting with 4g of th...

    Text Solution

    |

  12. The appearance of colour in solid alkali halides is generally due to

    Text Solution

    |

  13. The half life period of an radioactive element is 1.4 xx 10 ^(10) year...

    Text Solution

    |

  14. CsBr crystallzes in a body centred cubgic lattice . The unit cell leng...

    Text Solution

    |

  15. At low pressure and at high pressure, Freundlich adsorption isotherm m...

    Text Solution

    |

  16. Which of the following statements is not correct regarding physical an...

    Text Solution

    |

  17. If k for a first order reaction is 5.48 xx 10 ^(-14) s ^(-1), its two ...

    Text Solution

    |

  18. A 0.5 molal solution of ethylene glycol in water is used as coolant in...

    Text Solution

    |

  19. Which of the following is correct graph for a second order reaction ?

    Text Solution

    |

  20. A first order reactin is 15% complete in 20 minutes. Its rate constant...

    Text Solution

    |