Why ZnO is yellow at high temperature?

Because impurity is trapped.

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Because Zn ion (Zn²⁺) is trapped.

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Because it loses oxygen, zinc ions move to interstitial site and electrons to the neighbouring interstitial sites.

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Because oxide ion (O^2-) is trapped.

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Solution

The correct option is C
Because it loses oxygen, zinc ions move to interstitial site and electrons to the neighbouring interstitial sites.

Electrons are trapped in place of the O^2-.

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Similar questions

When an ion leaves its correct lattice site and occupies interstitial sites in its crystal lattice,it is called

Consider the following reaction which of the following statement is true for this cell reaction.

(Zn + Cu²⁺ → Zn²⁺ + Cu)

Z n O h e a t - - \to Z n^{2 +} + \frac{1}{2} O_{2} + 2 e^{-}

M g^{2 +}

O^{2 -}

66

140

M g^{2 +}

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

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