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Assertion (A) : Solids containing F cent...

Assertion (A) : Solids containing `F` centres are paramagnetic.
Reason (R ) : Solids containing `F` centres conduct electricity and it is `n`-type semiconduction.

A

If both `(A)` and `(R)` are correct, and `(R)` is the correct explanation of `(A)`

B

If both `(A)` and `(R)` are correct, but `(R)` is not the correct explanation of `(A)`

C

If `(A)` is correct, but `(R)` is incorrect.

D

If both `(A)` is incorrect, but `(R)` is correct.

Text Solution

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The correct Answer is:
B
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CENGAGE CHEMISTRY ENGLISH-SOLID STATE-Exercises (Assertion-Reasoning)
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  2. Assertion (A) : CsCl crystal, the coordination number of Cs^(o+) ion i...

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  4. Assertion (A) : The density of crystal having Schottky defect is lowe...

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  5. Assertion (A) : In sodium chloride crystal, Na^(o+) ions occupy OVs wh...

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  6. Assertion (A) : Solids containing F centres are paramagnetic. Reason...

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  7. STATEMENT -1 : Electrical consuctivity of semi -conductors incresase ...

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  8. Assertion (A) : Group-13-doped crystals of Si are called p-type semico...

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  9. Assertion (A) : Group-15-doped crystal of Si are called n-type semicon...

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  10. Assertion (A) : Non-stoichiometric compounds are called Bertholide com...

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  11. Assertion (A) : Graphite is an example of tetragonal crystal system. ...

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  12. Assertion (A) : The size of a cation is larger in TV than in OV. Rea...

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  13. STATEMENT -1 : Antiferromagnetic subatance becomes paramagentic on he...

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  14. Assertion (A) : Zinc blende and wurtzite both have fcc arrangement of ...

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  15. Assertion (A) : Covalent crystals have higher melting point. Reason ...

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  16. Assertion (A) : hcp is more closely packed than ccp. Reason (R ) : h...

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  17. Assertion (A) : Frenkel defects are shown by AgX. Reason (R ) : Ag^(...

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  18. Assertion (A) : Triclinic systeam is the most unsymmetrical systeam. ...

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