MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic ChemistrySolid stateImperfection in solids
The correct statement regarding F-centre is
A.Electron are held in the voids of crystals
B.F-centre produces colour to the crystals
C.Conductivity of the crystal increases due to F⁻
D.All of these✓ Correct
Explanation
Farbenzenter ----- meaning colour The anion may be missing from its lattice site leaving electrons behind so that charge remains balanced. Therefore conductivity increases as electrons increases. 121. If a electron is present in place of anion in a crystal lattice, then it is called (a) Frenkel defect (b) Schottky defect (c) Interstitial defect (d) F-centre F-centre is defined as when centre of anionic vacancy occupied by electrons. This phenomenon is responsible for color of substances.
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