Question:

Non stoichiometric defects are formed by

Updated On: Jun 26, 2023
  • s- block elements
  • p-block elements
  • either s-block elements or d-block elements
  • only d-block elements.
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The Correct Option is D

Approach Solution - 1

In nonstoichiometric defects ratio of cation and anion is not same that is represented by chemical ideal formula, this is due to variable oxidation nos of cation. Transition elements show variable oxidation nos.
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The reason why the ratio of cation to anion in non-stoichiometric defects is not the same as it is in the chemical ideal formula is because of the varying number of cations that have undergone oxidation. Variable oxidation numbers are visible in transition elements.
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Top Questions on Imperfections in Solids

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Concepts Used:

Imperfections in Solids

Any irregularity in the pattern of crystal arrangement in a solid lattice is called imperfection in solids. The occurrence of defects takes place when crystallization (the process of formation of crystals) occurs at a very fast or at an intermediate rate.

Basically, defects fall out in two forms:

  • Point Defect

When the irregularities exist from the ideal arrangement around a point or an atom in solids, the defect is known as a point defect. Types of point defects are:

  • Stoichiometric defects
  • Non-stoichiometric defects
  • Impurity defects
  • Line Defect

When the deviation from the ideal arrangement exists in the entire row of lattice points, the defect is called line defect.