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The lacttice parameter of GaAs (radius o...

The lacttice parameter of `GaAs` (radius of `Ga = 1.22 Å, As = 1.25 Å`) is

A

5.635 Å

B

2.852 Å

C

5.774 Å

D

4.94 Å

Text Solution

Verified by Experts

`(r_(c))/(r_(a))=(1.22)/(1.25)=0.976 implies` Hence Ga lines in Body centred or Cubic void where
`sqrt(3)a =2(r_(c)+r_(a)) implies a=2.852`
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VMC MODULES ENGLISH-THE SOLID STATE-LEVEL-2
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