Paragraph :In metal excess defect, anions all missed from their lattice sites and they are occupied by electrons to maintain electrical neutrality. These sites occupied by electrons are called F-centers.

Question: In metal excess defect

anions miss from their lattice points

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Cations miss from their lattice points

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Both cations and anions miss from their lattice points

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Extra anions are doped

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Solution

The correct option is A
anions miss from their lattice points

In this diagram anion miss from its lattice point and to balance the charge the lattice site is occupied by electrons.So as anions miss from their lattice points option (a) is correct

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Similar questions

Schottky defect is observed in crystals when .....................

(a) some cations move from their lattice site to interstitial sites

(b) equal number of cation and anions are missing from the lattice

(d) some impurity is present in the lattice

Paragraph :In metal excess defect, anions all missed from their lattice sites and they are occupied by electrons to maintain electrical neutrality. These sites occupied by electrons are called F-centers.

Question: In metal excess defect

In metal excess defect, anions all missed from their lattice sites and they are occupied by electrons to maintain electrical neutrality. These sites occupied by electrons are called F-centers.

What is the effect of metal excess defect on density of the crystal?

Question: The colour of NaCl changes when heated in sodium vapour due to

Q. Assertion :Schottky defect is generally shown by the compounds with high co-ordination number. Reason: In Schottky defect, equal number of anions and cations are missing from their lattice sites.

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Paragraph :In metal excess defect, anions all missed from their lattice sites and they are occupied by electrons to maintain electrical neutrality. These sites occupied by electrons are called F-centers. Question: In metal excess defect

The correct option is A anions miss from their lattice points In this diagram anion miss from its lattice point and to balance the charge the lattice site is occupied by electrons.So as anions miss from their lattice points option (a) is correct

Paragraph :In metal excess defect, anions all missed from their lattice sites and they are occupied by electrons to maintain electrical neutrality. These sites occupied by electrons are called F-centers.

Question: In metal excess defect

The correct option is A
anions miss from their lattice points

In this diagram anion miss from its lattice point and to balance the charge the lattice site is occupied by electrons.So as anions miss from their lattice points option (a) is correct