Home
Class 12
CHEMISTRY
An elements X ("At. mass=80g//mol") has ...

An elements X `("At. mass=80g//mol")` has fcc structure. Calculate no. of unit cell is 8gm of X:

A

`9.4xxN_(A)`

B

`0.1xxN_(A)`

C

`4xxN_(A)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
4
Effective no of atoms in a unit cell `=4`
No. of atoms `=(8)/(80)xxN_(A)`
`:." "`No. of unit cell`=(N_(A))/(10)xx(1)/(4)`
Promotional Banner

Topper's Solved these Questions

  • RANK BOOSTER

    RESONANCE ENGLISH|Exercise All Questions|1896 Videos

  • SOLUTION AND COLLIGATIVE PROPERTIES

    RESONANCE ENGLISH|Exercise PHYSICAL CHEMITRY (SOLUTION & COLLIGATIVE PROPERTIES)|52 Videos

Similar Questions

Explore conceptually related problems

An element X (At,wt = 80 g//mol) having fcc structure, calculate the number of unit cells in 8g of X

An element 'X' (At. Mass = 40 g mol^(-1) ) having f.c.c structure has unit cell edge length of 400 pm . Calculate the density of 'X' and the number of unit cells in 4 g of 'X' . (N_(A) = 6.022 xx 10^(23) mol^(-1)) .

An element (At. Mass =50 g/mol) having fcc structure has unit cell edge length 400 pm. The density of element is

An element 'x' (Atomic mass = 40 g mol^(-1) ) having f.c.c. structure has unit cell edge length of 400 pm. Calculate the density of 'x' and the number of unit cells in 4 g of 'x'

An element (atomic mass = 100 g//mol ) having bcc structure has unit cell edge 400 pm .Them density of the element is

An element (atomic mass = 100 g//mol ) having bcc structure has unit cell edge 400 pm .Them density of the element is

A element crystallises in a bcc structure. The edge length of its unit cell is 288 pm. If the density of the crystal is 7.3 g cm^(-3) , what is the atomic mass of the element ?

An element (at. mass = 60) having face centred cubic unit cell has a density of 6.23g cm^(-3) . What is the edge length of the unit cell? (Avogadro's constant = 6.023 xx 10^(23) mol^(-1) )

An element A (Atomic weight =100 ) having b.c.c. structure has unit cell edge length 400 pm. Calculate the density of A, number of unit cells and number of atoms in 10 g of A.

Atomic radius of aluminium is 125 pm. If aluminium has a fcc structure, calculate the edge length of the unit cell.

RESONANCE ENGLISH-SOLID STATE-PHYSICAL CHEMITRY (SOLID STATE)
  1. Three elements P, Q and R crystallize in a cubic solid lattice. The P ...

    Text Solution

    |

  2. In a face centred cubic arrangement of A and B atoms whose A atoms are...

    Text Solution

    |

  3. How many nearest and next nearest neighbours respectively does sodium ...

    Text Solution

    |

  4. If a metal has a bcc crystal structure, the coordination number is 8 b...

    Text Solution

    |

  5. In a ccp structure, the:

    Text Solution

    |

  6. The numbers of tetrahedral and octahedral holes in a ccp array of 100 ...

    Text Solution

    |

  7. In a face centred cubic arrangement of metallic atoms, what is the rel...

    Text Solution

    |

  8. An elements X ("At. mass=80g//mol") has fcc structure. Calculate no. o...

    Text Solution

    |

  9. The atomic radius of strontium (Sr) is 215 p m and it crystallizes wit...

    Text Solution

    |

  10. In the spinel structur, oxides ions are cubical-closet packed whereas ...

    Text Solution

    |

  11. Select the incorrect statement

    Text Solution

    |

  12. When NaCl is dopped with 10^(-5) "mole % of" SrCl(2), what is the no. ...

    Text Solution

    |

  13. The ionic radii for Na^(+) and Br^(-) ions are 1.012Å and 1.973Å respe...

    Text Solution

    |

  14. The size of CI^(-) ion is 1.8 Å. The size of a cation for which a chan...

    Text Solution

    |

  15. Li forms a body-centred cubic lattice. If the edge of the cube is 3.5 ...

    Text Solution

    |

  16. Calcium crystallises in a face - centred cubic unit cell with a=0.556n...

    Text Solution

    |

  17. How many ‘nearest’ and ‘next nearest’ neighbours respectively does pot...

    Text Solution

    |

  18. An fcc lattice has a lattice parameter a = 400 pm. Calculater the mola...

    Text Solution

    |

  19. Copper has a face- centred cubic structure with a unit- cell edge leng...

    Text Solution

    |

  20. Consider the plane shown in the figure : A rock sale (NaCl) lattice ...

    Text Solution

    |