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Assertion :In NaCIcrystal each Na^(+) io...

Assertion :In `NaCI`crystal each `Na^(+)` ion is tourching `6 CI^(-)` ion but these `CI^(-)` ion do not touch each other
Reason:The radius ratio is greater than `0.414` required forexact fitting

A

If both assertion and reason are correct and reason is correct explanation for assertion

B

If both assertion and reason are correct but reason is not correct explanation for assertion

C

If assertion is correct but reason is incorrect

D

If both assertion and reason are incorrect

Text Solution

Verified by Experts

The correct Answer is:
B
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Assertion. In a unit cell of NaCl, all Cl^(-) ions as will they touch each other. Reason. Radius ratio r_(+)//r_(-) in NaCl is 0.414.

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How many Na^(o+) ions sorround each CI^(Θ) ion in NaCI crystal lattice ?

The number of CI^(-) ions around one Na^(+) in NaCI crystal lattice is

Assertion : CsCI has body - centred cunic arrangement Reason: CsCI has one and 8 CI^(-) ion is its unit cell

Assertion: Formation of Cl^(-) ion is exothermic wheres O^(2-) ion formation is endothermic. Reason: EA_(2) of oxygen is endothermic and greater than its exothermic EA_(1) value of oxygen.

DINESH PUBLICATION-SOLID STATE-A.R
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  4. Assertion :In NaCIcrystal each Na^(+) ion is tourching 6 CI^(-) ion bu...

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  11. STATEMENT -1 : In NaCl structure , Na^(+) ion occupy octahedral hole...

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  12. Assertion: In the body centred cubic structure of CsCl the arrangement...

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  13. Assertion: Diamond has a ccp arrangement in which corners, face centre...

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