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The group 15 elements are called :...

The group 15 elements are called :

A

Chalcogens

B

Halogens

C

Pnicogens

D

Noble gases

Text Solution

Verified by Experts

The correct Answer is:
C
Pnicogens
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Doping mens introduction of small amount of impurities like phosphorus , arsenic or boron into the pure crystal . In pure silicon , ther are four valenices used in bonding with other four adjacent silicon crystal is doped with a group -15 element ( with five valence electron ) such as P, As , or Bi , the structure of the crystal lattic remains unchanged . Out of the five valence electron of group -15 doped element four element are used in normal covalent bonding with silicon while fiffth electron is delcoasiled and thus conducts electricity Doping a silicon crystal with a group -13 element (with three valence electrons ) such as B, Al, Ga or In products a semiconductor with three electrons in in dopant . The place where fourth electron is missing is called an electron vacancy or hole . Such hole can move throught the crystal like a positive charge giving rise conduction of electricity. Silicon that has been dopend with group - 15 elements is called :

Doping mens introduction of small amount of impurities like phosphorus , arsenic or boron into the pure crystal . In pure silicon , ther are four valenices used in bonding with other four adjacent silicon crystal is doped with a group -15 element ( with five valence electron ) such as P, As , or Bi , the structure of the crystal lattic remains unchanged . Out of the five valence electron of group -15 doped element four element are used in normal covalent bonding with silicon while fiffth electron is delcoasiled and thus conducts electricity Doping a silicon crystal with a group -13 element (with three valence electrons ) such as B, Al, Ga or In products a semiconductor with three electrons in in dopant . The place where fourth electron is missing is called an electron vacancy or hole . Such hole can move throught the crystal like a positive charge giving rise conduction of electricity. Silicon that has been dopend with group - 13 elements is called :

Knowledge Check

  • Group 18 elements are inert due to:

    A
    Small size
    B
    R are Availability
    C
    Stable Electronic configuration
    D
    None

  • The boiling point of hydrides of group 16 elements are in the order

    A
    `H_2 O gt H_2 S gt H_2 Te gt H_2 Se`
    B
    `H_2 Te gt H_2 Se gt H_2 S gt H_2O`
    C
    `H_2O gt H_2 Te gt H_2Se gt H_2 S`
    D
    `H_2 Te gt H_2 O gt H_2 S gt H_2 Se`

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