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Crystalline and Amorphous Solid

Which of the ...

Question

Which of the following are not isomorphous to each other?

A

B a S O_{4}

and

K M n O_{4}

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B

K N O_{3}

and

N a C l O_{4}

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C

K_{2} C O_{3}

and

K_{2} S O_{3}

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D

N a_{2} C O_{3}

and

M g (N O_{3})_{2}

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Solution

The correct options are
A $K N O_{3}$ and $N a C l O_{4}$
B $K_{2} C O_{3}$ and $K_{2} S O_{3}$
D $N a_{2} C O_{3}$ and $M g (N O_{3})_{2}$
In crystallography, crystals are described as isomorphous if they are closely similar in shape.

In order to form isomorphous crystals, two substances must have the same chemical formulation, they must contain atoms which have corresponding chemical properties and the sizes of corresponding atoms should be similar.

Out of these compounds, only $B a S O_{4}$ and $K M n O_{4}$ are isomorphous due to similar shape of anions.

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Similar questions

C r_{2} O_{3}

F e_{2} O_{3}

A l_{2} O_{3}

are isomorphous but

N a N O_{3}

K N O_{3}

are not isomorphous.

Q. Which of the following pairs can be distinguished by the action of heat?
(i)

K_{2} C O_{3}

C a C O_{3}

N a_{2} C O_{3}

M g (N O_{3})_{2}

M g (N O_{3})_{2}

N a N O_{3}

Q. Which are isomorphic to each other?

Q. The product obtained on fusion of

B a S O_{4}

{N a}_{2} C O_{3}

1.2 g

N a_{2} C O_{3}

K_{2} C O_{3}

was dissolved in water in form

100 c m^{3}

20 c m^{3}

of this solution required

40 c m^{3}

0.1 N H C l

for neutralisation. Calculate the mass of

N a_{2} C O_{3}

K_{2} C O_{3}

in the mixture.

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