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Byju's Answer

Standard XII

Chemistry

Introduction to Imperfections in Solids

In the given ...

Question

In the given crystal what should be the cation $X$ which replaces to create a ${N a}^{+}$ cation vacancy?

{S r}^{2 +}

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K^{+}

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{L i}^{+}

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{B r}^{-}

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Solution

The correct option is A ${S r}^{2 +}$
To create a $N a^{+}$ cation vacancy as well as maintain the charge neutrality in the crystal, X has to be $S r^{2} +$

Option A is correct.

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Similar questions

If NaCl is doped with $10^{- 3} m o l %$ of $S r C l_{2^{'}},$ each $S r^{2 +}$ ion replaces two $N a^{+}$ ions, but occupies only one lattice point in place of $N a^{+}$ ion. This creates one cation vacancy.

Q. KBr is doped with

10^{- 5}

mole per cent of

S r B r_{2}

. The number of cationic vacancies in 1 g of KBr crystal is

\times 10^{14}

. (Round off to the Nearest Integer).

[A t o m i c M a s s : K = 39.1 u, B r = 79.9 u, N_{A} = 6.023 \times 10^{23}]

Q. The concentration of cation vacancies in

N a C l

crystal doped with

C d C l_{2}

is found to be

6.02 \times 10^{16} m o l^{- 1}

. What is the concentration of

C d C l_{2}

added to it?

Q. If

N a C l

is doped with

10^{- 4} m o l %

S r C l_{2}

, the concentration of cation vacancies will be:

(N_{A} = 6.02 \times 10^{23} m o l^{- 1})

Q. NaCl is doped with

10^{- 4}

mol %

S r C l_{2}

, the concentration of cation vacancies is:
[Hint : Concentration of vacancies =

\frac{10^{- 4}}{100} N_{A}

]

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In the given crystal what should be the cation X which replaces to create a Na+ cation vacancy?

The correct option is A Sr2+To create a Na+ cation vacancy as well as maintain the charge neutrality in the crystal, X has to be Sr2+Option A is correct.

In the given crystal what should be the cation $X$ which replaces to create a ${N a}^{+}$ cation vacancy?

The correct option is A ${S r}^{2 +}$
To create a $N a^{+}$ cation vacancy as well as maintain the charge neutrality in the crystal, X has to be $S r^{2} +$

Option A is correct.