Home
Class 11
CHEMISTRY
Density of Li is 0.53"g cm"^(-3). The ed...

Density of Li is `0.53"g cm"^(-3)`. The edge length of Li is `3.5Å`. Find the number of Li atoms in a unit cell `(N_(0)=06.023xx10^(23),M=6.94)`.

Text Solution

Verified by Experts

The aim is to find Z in the formula `rho=(ZxxM)/(a^3xxN_0)`
`therefore Z=(rhoxxa^3xxN_0)/M=(0.53 "g cm"^(-3)xx(3.5xx10^(-8) cm)^3xx(6.023xx10^3 "mol"^(-1)))/(6.94 "g mol"^(-1))=1.97 =2`
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise CURIOSITY|3 Videos

  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise ADVANCED PROBLEMS|17 Videos

  • STATES OF MATTER : GASES AND LIQUIDES

    PRADEEP|Exercise VIII. ASSERTION-REASON TYPE QUESTIONS (TYPE-II)|12 Videos

  • STRUCTURE OF ATOM

    PRADEEP|Exercise Competition Focus (JEE (Main and Advanced)/Medical Entrance (IX. Assertion And Reason Type Questions (Type II))|12 Videos

Similar Questions

Explore conceptually related problems

Density of lithium atom is 0.53 g//cm^(3) . The edge length of Li is 3.5 Å .The number of lithium atoms in a unit cell will be……….. . (Atomic mass of lithium is 6.94)

The density of silver having atomic mass 107.8 gram "mol"^(-1) is 10.8 gram cm^(-3) . If the edge length of cubic unit cell is 4.05xx10^(-8)cm , find the number of silver atoms in the unit cell. (N_(A)=6.022xx10^(23),1A^(@)=10^(-8)cm)

The density of KBr is 2.73g//cm . The length of the unit cell is 654p m . Find the number of atoms per unit cell in the cubic structure.

The total number of protons in 10g of calcium carbonate is (N_(0) = 6.023xx10^(23))

The total number of protons in 10 g of calcium carbonate is (N_(0) = 6.023 xx 10^(23)) :-

The density of iron crystal is 8.54 gram cm^(-3) . If the edge length of unit cell is 2.8 Å and atomic mass is 56 gram mol^(-1) , find the number of atoms in the unit cell. (Given : Avogadro's number =6.022xx10^(23), 1Å = 1xx10^(-8) cm)

PRADEEP-STATES OF MATTER: SOLID MATTER-COMPETITION FOCUS (ASSERTION-REASON)
  1. Density of Li is 0.53"g cm"^(-3). The edge length of Li is 3.5Å. Find ...

    Text Solution

    |

  2. Statement -1 : Covalent crystals have the highest melting point . S...

    Text Solution

    |

  3. Statement -1 : In NaCl crystal , all the octahdefral voids are occupie...

    Text Solution

    |

  4. Assertion : The octahedral viods have double the size of the tetrabed...

    Text Solution

    |

  5. Statement 1: In any ionic solid [MX] withschotty defects, the number o...

    Text Solution

    |

  6. Assertion: Triclinic system is the most unsymmetrical system. Reason...

    Text Solution

    |

  7. Assertion . Graphite is an example to hexogonal crystal system. Reas...

    Text Solution

    |

  8. Assertion : CsCI has body - centred cunic arrangement Reason: CsCI ...

    Text Solution

    |

  9. Assertion . Hexagonal close packing is equally closely packed than cub...

    Text Solution

    |

  10. Assertion (A) : Zinc blende and wurtzite both have fcc arrangement of ...

    Text Solution

    |

  11. Assertion: In a crystal, the size of the cation is larger in a tetrahe...

    Text Solution

    |

  12. Assertion. In a unit cell of NaCl, all Cl^(-) ions as will they touch...

    Text Solution

    |

  13. Assertion:If the length of the unit cell of LICI having NaCI structur...

    Text Solution

    |

  14. Assertion. The sum of the radii of Na^(+) and Cl^(-) ions in NaCl c...

    Text Solution

    |

  15. Assertion (A) : Frenkel defects are shown by AgX. Reason (R ) : Ag^(...

    Text Solution

    |

  16. Assertion. No compound has both Schottky and Frenkel defects. Reaso...

    Text Solution

    |

  17. Assertion. When 1.0 mol of NaCl is doped with 10^(-3) mol SrCl2, the n...

    Text Solution

    |

  18. Assertion (A) : Antiferromagnetic substances on heating to high temper...

    Text Solution

    |