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Which of the following expressions is co...

Which of the following expressions is correct in the case of a sodium chloride unit cell (edge length, `a`)?

A

`r_(o+) + r_(ɵ) = a`

B

`r_(o+) + r_(ɵ) = a//2`

C

`r_(o+) + r_(ɵ) = 2a`

D

`r_(o+) + r_(ɵ) = sqrt2a`

Text Solution

Verified by Experts

The correct Answer is:
B
`r_(o+) + r_(ɵ) = a//2`
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CENGAGE CHEMISTRY-SOLID STATE-Ex 1.1 (Objective)
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  2. In a body-centred cubic unit cell of closest packed atoms, the radius ...

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  3. Which of the following expressions is correct in the case of a sodium ...

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  4. In silicon crystal, Si atoms from fcc arrangement where 4 out 8 TVs ar...

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  5. Which of the following crystal systems exist in bc, end-centred, fc, a...

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  6. In a cubic,A atoms are present on alternative corners, B atoms are pre...

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  7. The fraction of octahedral voids filled by Al^(3+) ion in Al(2)O(3)(r(...

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  8. In the closest packing atoms, there are

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  9. Which of the following statement si correct for the body-centred cubic...

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  10. Aluminium metal has a density of 2.72 g cm^(-3) and crystallizes in a ...

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  11. If atoms are removed from half of the edge-centred OV(s) in RbBr, then...

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  12. ThO(2) exists in fluorite structure, what is the effective numver of b...

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  13. What is the coordination number of Th^(4+) in ThO(2)?

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  14. The coordination number Cs and Br in CsBr are, respectively,

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  15. The fraction of total volume occupied by atoms in a simple cube is

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  16. Xenon crystallises in face - centered cubic , and the edge of the unit...

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  17. In BeO (zinc blende structure), Mg^(2+) is introduced in available TV ...

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  18. If the ions are removed from a single body diagonal in above case afte...

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  19. In spinel, Mg^(2+) is present in one-eighth of TVs in an fcc lattice o...

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