Home
Class 12
PHYSICS
C, Si and Ge have same lattice structure...

C, Si and Ge have same lattice structure. Why is C insulator while Si and Ge intrinsic semiconductors?

A

number of free electrons for conduction in charbon is negligibly small

B

more energy is required for the electron to remove in carbon

C

the bonding electrons exist in first orbit in case of carbon

D

All the above

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR DEVICES

    AAKASH SERIES|Exercise EXERCISE -I (P-N JUNCTION DIODE)|30 Videos

  • SEMICONDUCTOR DEVICES

    AAKASH SERIES|Exercise EXERCISE -I (TRANSISTORS)|22 Videos

  • SEMICONDUCTOR DEVICES

    AAKASH SERIES|Exercise EXAMPLES|56 Videos

  • RAY OPTICS

    AAKASH SERIES|Exercise PROBLEMS ( LEVEL-II)|60 Videos

  • UNITS AND MEASUREMENT

    AAKASH SERIES|Exercise PRACTICE EXERCISE|45 Videos

Similar Questions

Explore conceptually related problems

Sn, C, Si and Ge are all group XIV elements . Yet , Sn is a conductor , C is an insulator while Si and Ge are semiconductors . Why?

Sn, C, Si and Ge are all group XIV elements . Yet , Sn is a conductor , C is an insulator while Si and Ge are semiconductors . Why?

C and Si both have same lattice structure, having 4 bonding electrons in each. However, C is insulator whereas Si is intrinsic semiconductor. This is because

Three elements B, Si and Ge are

CaO and NaCI have the same crystal structure and approximately the same ionic radii. If U is the lattice energy of NaCl, the approximate lattice energy of CaO is

Oxides of nitrogen have open chain structures while those of phosphorous have closed chain or cage structures. Why ?

Assertion (A) : B_(2)H_(6),Si2H_(6) are said to have similar structure . Reason (R) : They have same number of sigma and pi bonds.

Carbon , silicon and germanium have four valence elcectrons each . These are characterised by valence and conduction bands separated by energy band - gap respectively equal to (E_g)_(c) (E_g)_(si) and (E_g)_(Ge) . Which of the following statements ture ?

Carbon , silicon and germanium have four valence elcectrons each . These are characterised by valence and conduction bands separated by energy band - gap respectively equal to (E_g)_(c) (E_g)_(si) and (E_g)_(Ge) . Which of the following statements ture ?

Carbon , silicon and germanium have four valence elcectrons each . These are characterised by valence and conduction bands separated by energy band - gap respectively equal to (E_g)_(c) (E_g)_(si) and (E_g)_(Ge) . Which of the following statements ture ?

AAKASH SERIES-SEMICONDUCTOR DEVICES-EXERCISE -I (ENERGY BANDS AND CLASSIFICATION OF SOLIDS )
  1. Carbon, silicon and germanium have four valence electrons each. These ...

    Text Solution

    |

  2. C, Si and Ge have same lattice structure. Why is C insulator while Si ...

    Text Solution

    |

  3. Which of the following statements is not true

    Text Solution

    |

  4. Which of the following is correct

    Text Solution

    |

  5. Which of the energy band diagram shown in the figure corrensponds to t...

    Text Solution

    |

  6. The bond that exists in a semi conductor is

    Text Solution

    |

  7. The conduction band and valence band in a good conductor

    Text Solution

    |

  8. At absolute zero , Si acts as

    Text Solution

    |

  9. On increasing the temperature, the specific resistance of

    Text Solution

    |

  10. A solid which is not transparent to visible light end whose conductivi...

    Text Solution

    |

  11. A piece of copper and another of germanium are cooled from room temper...

    Text Solution

    |

  12. In a good conductor, what is the energy gap between the conduction b...

    Text Solution

    |

  13. In a semiconductor, the separation between conduction band and valence...

    Text Solution

    |

  14. The intrinsic semi conductor behaves as insulator at

    Text Solution

    |

  15. The energy gap for an insulator may be

    Text Solution

    |

  16. In case of a semi conductor, which one of the following statements is ...

    Text Solution

    |

  17. An electric field us applied to a semiconductor.Let the number of char...

    Text Solution

    |

  18. Lets npand ne be the number of holes and conduction electrons in an in...

    Text Solution

    |

  19. If the two ends of a p-n junction are joined by a wire .

    Text Solution

    |

  20. The drift current in a p-n junction is

    Text Solution

    |