Home
Class 12
CHEMISTRY
Iron crystallizes in several forms. At 1...

Iron crystallizes in several forms. At 1185 K, the body centred cubic `alpha` form of iron changes to the face centred cubic `gamma` form of iron. Assuming that the distance between the nearest neighbours is the same in two forms at the transition temperature, calculate the ratio of the density of `alpha` form to that of `gamma` form at the transistion temperature.

Promotional Banner

Topper's Solved these Questions

  • SOLID STATE

    MODERN PUBLICATION|Exercise EXERCISE|525 Videos

  • POLYMERS

    MODERN PUBLICATION|Exercise EXERCISE|327 Videos

  • SOLUTIONS

    MODERN PUBLICATION|Exercise EXERCISE|635 Videos

Similar Questions

Explore conceptually related problems

A compound formed by two elements A and B crystallizers in the cubic structure. Atomic B are present at the corners of the cube and atoms A at the centre of opposite faces. What is the formula of the compound ?

The gravitational force between a hollow spherical shell (of radius R and uniform density) and a point mass is F. Show the nature of F vs r graph whee r is the distance of the point form the centre of the hollow spherical shell of uniform density.

In Young's double slit experiment,light of wavelength 5,000 overset @A is used.The screen on which fringes are projected is 1.5 m from the centre of the narrow slits. The third bright band on the screen is formed at a distance of 1 cm from the central bright band calculate the separation between the slits.

How many atoms can be assigned to its unit cell if an element forms face centred cubic cell?

Lithium forms body centred cubic structure. The length of the side is unit cell is 351 pm. Atomic radius of lithium will be

How many atoms can be assigned to its unit cell if an element forms a body centred cubic cell?

Formula mass of NaCl is 58.45 g mol^-1 and density of its pure form is 2.167 g cm^-3 . The average distance between adjacent sodium and chloride ions in the crystal is 2.814xx10^-8 cm . Calculate the Avogadro number.

In a two-slit experiment with monochromatic light, fringes are obtained on the screen placed at some distance form the slits. If the screen is moved by 5 xx 10^-2 m towards the slits, the change in fringe width is 3 xx 10^-5 m . If the distance between the slits is 10^-3 m , calculate the wavelength of the light band.

The vapour pressure of ethanol and methanol are 44.5 and 88.7 mm of Hg at 298 K. An ideal solution is formed at the same temperature by mixing 60 g of ethanol and 40 g methanol. Calculate the total vapour pressure of the solution and the mole fraction of methanol in the vapour phase.

MODERN PUBLICATION-SOLID STATE-EXERCISE
  1. Iron crystallizes in several forms. At 1185 K, the body centred cubic ...

    Text Solution

    |

  2. A unit cell consists of a cube in which there are A atoms at the corne...

    Text Solution

    |

  3. A compound X and Y crystallises in the cubic structure in which Y atom...

    Text Solution

    |

  4. Gold cystallises in the face cubic lattice. Calculate the approximate ...

    Text Solution

    |

  5. Xenone crystallizes in the face centred cubic lattice and the edge of ...

    Text Solution

    |

  6. The length of the unit cell edge of a body centred cubic metal crystal...

    Text Solution

    |

  7. Calculate the atomic radius of elementary silver which crsytallises in...

    Text Solution

    |

  8. A solid has a structure in which W atoms are present at the corners of...

    Text Solution

    |

  9. Tungsten crystallizes in a body centred cubic lattice. Calculate the n...

    Text Solution

    |

  10. Copper cystalizes in a face centred cubic lattice. Calculate the numbe...

    Text Solution

    |

  11. Gold (atomic radius=0.144nm) crystallises in a face-centred unit cell ...

    Text Solution

    |

  12. In a face centred cubic arangement of A and B atoms, A atoms occupy th...

    Text Solution

    |

  13. The atomic radii of Cs^+ and Cl^- are 1.69 oversetcircA and 1.81 overs...

    Text Solution

    |

  14. A solid has NaCl structure. If the radius of cation A is 100 pm. What ...

    Text Solution

    |

  15. If the radius of Br^- ions is 0.182 nm, how large a cation can fit in ...

    Text Solution

    |

  16. A compound is formed by two elements X and Y. Atoms of the element Y (...

    Text Solution

    |

  17. A compound is formed by two elements in M and N. The element N forms c...

    Text Solution

    |

  18. In a crystalline solid, anions Y are arranged in ccp arrangement. Cati...

    Text Solution

    |

  19. In a solid, oxide ions are aranged in ccp. One sixth of the tetrahedra...

    Text Solution

    |

  20. In corrundum, oxide ions are arranged in hcp arrangement and the alumi...

    Text Solution

    |

  21. An element crystallines in a f.c.c lattice with cell edge of 400 pm. T...

    Text Solution

    |