Home
Class 12
CHEMISTRY
The mass of unit cell of CaF(2) (fluorit...

The mass of unit cell of `CaF_(2)` (fluorite structure) corresponds to

A

mass of `8 Ca^(++)` ions and `4F^(-)` ions

B

mass of `4Ca^(++)` ions and `8F^(-)` ions

C

mass of `4 Ca^(++)` ions and `4F^(-)` ions

D

mass of `1 Ca^(++)` ions and `2F^(-)` ions

Text Solution

Verified by Experts

The correct Answer is:
B
In `CaF_(2)` (calacum floorite) 1- unit cell contain `4 Ca^(2+)` ions `8F` ions
so mass of unit cells of `CaF2`
= mass of `4 Ca^(2+)` ions + mass of `8F` ions
Promotional Banner

Topper's Solved these Questions

  • SOLID STATE

    A2Z|Exercise Assertion - Reasoning Questions|7 Videos

  • P BLOCK ELEMENTS ( GROUP 15,16,17,18)

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • SOLUTIONS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

The mass of unit cell of Na_(2)O is

A unit cell of BaCl_2 (fluorite structure) is made up of

In fluorite structure of AB_2

In fluorite structure (CaF_2) -

The lattice of CaF_(2) is called fluorite structure. SrCl_(2) has fluorite structure. Which of the following statements is true for SrCl_(2) ?

In floorite structure (CaF_(2))

Knowledge Check

  • The mass of unit cell of Na_(2)O is

    A
    Twice the formula mass of `Na_(2)O`
    B
    Four times the formula mass of `Na_(2)O`
    C
    Six times the formula mass of `Na_(2)O`
    D
    Thrice the formula mass of `Na_(2)O`

  • A unit cell of BaCl_2 (fluorite structure) is made up of

    A
    four `Ba^(2+)` ions and four `Cl^-` ions
    B
    four `Ba^(2+)` ions and eight `Cl^-` ions
    C
    eight `Ba^(2+)` ions and four `Cl^-` ions
    D
    four `Ba^(2+)` ions and six `Cl^-` ions

  • In fluorite structure of AB_2

    A
    On subjecting to strong heating it changes to antifluorite structure
    B
    Interchanging the position of positive and negative ion changes to antifluorite structure
    C
    Coordination number of A=8 and B=4
    D
    Coordination number of A=4 and B=8
    • A2Z-SOLID STATE-Section D - Chapter End Test
    1. The mass of unit cell of CaF(2) (fluorite structure) corresponds to

      Text Solution

      |

    2. Close packing is maximum in the crystal which in the crystal which is

      Text Solution

      |

    3. An ionic compound AB has ZnS type of structure if the radius A^(+) is ...

      Text Solution

      |

    4. A pure crystallic substance , on being heated gradually first a hurbit...

      Text Solution

      |

    5. Under which category iodine crystals are placed among the following

      Text Solution

      |

    6. How many molecules are there in the unit cell of sodium chioride?

      Text Solution

      |

    7. The structure of TICI is silmilar to CsCI .What would be the radius r...

      Text Solution

      |

    8. Na and Mg crystallize in bcc- and fcc-type crystals, respectively, the...

      Text Solution

      |

    9. In the closest packed struture of a metallic lattice , the number of m...

      Text Solution

      |

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

      Text Solution

      |

    11. Potassium has a bcc structure with nearest neighour distance 4.52 Åits...

      Text Solution

      |

    12. Ferrous oxide has cubes structure and each edge of the unit cell is 5....

      Text Solution

      |

    13. In A^(+)B^(-) ionic compound radii of A^(=) and B^(-) ions are 180 "pm...

      Text Solution

      |

    14. In the calcium fluoride structure, the coodination number of the catio...

      Text Solution

      |

    15. Which of the following has Frenkel defect?

      Text Solution

      |

    16. Which one of the following is the most correct statement?

      Text Solution

      |

    17. The molecule having three fold axis of symmetry is :

      Text Solution

      |

    18. In a f.c.c. arrangement of A and B atoms, where A atoms are at the cor...

      Text Solution

      |

    19. In floorite structure (CaF(2))

      Text Solution

      |

    20. A solid is made of two element X and Y .The atoms Z are in C CP arrang...

      Text Solution

      |