Home
Class 12
CHEMISTRY
KF and NaCl struture. If the distance be...

KF and NaCl struture. If the distance between ` K ^(+) and F^(-)` is 269 pm, find the denisty of KF ( ` N_(A) = 6.02 xx 10^(23) "mol"^(-1)` a atomic mass of copper = 63.5

Text Solution

Verified by Experts

For NaCl type structure of KF
`a=2(r_(K^+)……. + r_(F^-))` or 2 x 269 =538 pm
`rho=(ZxxM)/(N_0xxa^3)=(4xx58)/(6.02xx10^23 xx(538xx10^(-10))^3`
`rho=2.48 "g/cm"^3`
Promotional Banner

Topper's Solved these Questions

  • THE SOLID STATE

    AAKASH INSTITUTE|Exercise Try Yourself|56 Videos

  • THE SOLID STATE

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION-A (OBJECTIVE)|50 Videos

  • THE S-BLOCK ELEMENTS

    AAKASH INSTITUTE|Exercise Assignment (Section-J)|10 Videos

  • THERMODYNAMICS

    AAKASH INSTITUTE|Exercise ASSIGNMENT (Section -D) Assertion-Reason Type Questions|15 Videos

Similar Questions

Explore conceptually related problems

KF has NaCl structure. If distance between K^(+) & F^(-) is 269 pm, find the density of KF. (At mass of K = 39 and F = 19).

KF has NaCl structure. What is the distance between K^(+) and F^(-) in KF, if the density is 2.48g cm^(-3) ?

The number of atoms in 0.1 mol of a tetraatomic gas is ( N_(A) = 6.02 xx 10^(23) mol^(-1) )

AAKASH INSTITUTE-THE SOLID STATE -Assignment (SECTION - D) (ASSERTION-REASON TYPE QUESTION)
  1. KF and NaCl struture. If the distance between K ^(+) and F^(-) is 2...

    Text Solution

    |

  2. A : In NaCl structure, the interionic distance is a/2 (a = Unit cell e...

    Text Solution

    |

  3. A : The co - ordination number of CaF(2) is 8 : 4. R : Ca^(2+) ion...

    Text Solution

    |

  4. A : The number of spheres are equal to the number of octahedral voids ...

    Text Solution

    |

  5. A : In Schottky defect, density of crystal decreases. R : Equal nu...

    Text Solution

    |

  6. A : If a tetrad axis is passed through the unit cell of NaCl and all i...

    Text Solution

    |

  7. A : A particle at the corner of CCP unit cell has (1)/(8)th of its con...

    Text Solution

    |

  8. A : Glass belongs to the category of covalent network solid. R : U...

    Text Solution

    |

  9. A : NaCl shows Schottky defect at room temperature. R : NaCl shows...

    Text Solution

    |

  10. A : Fe(3)O(4) is ferrimagnetic at room temperature but becomes paramag...

    Text Solution

    |

  11. A : In molecular solids the lattice points are occupied by the atoms o...

    Text Solution

    |

  12. A : Silicon is insulator at 0 K but semiconductor at room temperature....

    Text Solution

    |

  13. A : Amorphous solids are isotropic. R : Amorphous solids are not rig...

    Text Solution

    |

  14. A : In NaCl coordination number of Cl^(-) ion is 6 but in CsCl coordin...

    Text Solution

    |

  15. A : All crystals of same substance possess the same elements of symmet...

    Text Solution

    |

  16. A : AgBr shows both Schottky and Frenkel defect. R : AgBr is a cry...

    Text Solution

    |

  17. A : Number of carbon atoms per unit cell in diamond is 8. R : The ...

    Text Solution

    |

  18. A : The coordination number of ionic compound depends upon radius rati...

    Text Solution

    |

  19. A : Number of rectangular plane in a cubic crystal is 3. R : Recta...

    Text Solution

    |

  20. A : ccp is more efficient than hcp. R : Packing fraction is differe...

    Text Solution

    |

  21. A : Coordination number of both Na^(+) and Cl^(-) NaCl is 6. R : Se...

    Text Solution

    |