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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEC
Chapter: Solid State

Olympiad workbook · NSEC · Solid State

An ionic solid LaI_2 shows electrical conduction due to presence of

An ionic solid

\mathrm{LaI}_2

shows electrical conduction due to presence of

Options

A $\mathrm{La}^{2+}$ and $2$ \mathrm{I} $^{-}$
B $\mathrm{La}^{3+}, 2$ \mathrm{I} $^{-}$ and $\mathrme^{-}$
C $\mathrm{La}^{2+},$ \mathrm{I} $_2$ and $2 \mathrme^{-}$
D $\mathrm{La}^{3+},$ \mathrm{I} $_2$ and $3 \mathrme^{-}$

Correct answer

B. $\mathrm{La}^{3+}, 2$ \mathrm{I} $^{-}$ and $\mathrme^{-}$

Step-by-step solution

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