Single Choice

The intermetallic compound LiAg crystallizes in a cubic lattice in which lithium and silver atoms have co-ordination number of $$8$$. To what crystal class does the unit cell belong?

ASimple cubic
Correct Answer
BFace-centred cubic
CBody-centred cubic
DEdge-centred cubic

Solution

LiAg forms a primitive cubic cell. where ions present at corner froms the Simple cubic crystal structure and ion present at the center occupies cubic hole. Hence, the correct option is A.

SIMILAR QUESTIONS

Solid State

Co-ordination number of cation is minimum in:

Solid State

Coordination number of $$Na^{+}$$ ion in $$NaCl$$ is 6 and that of caesium ion in $$CsCl$$ is 8.This is because:

Solid State

The co-ordination number of sodium in sodium chloride is:

Solid State

The ionic radii of $$A^{+}$$ and $$B^{-}$$ ions are $$0.98\times 10^{-10}m$$ and $$1.81\times 10^{-10}m$$. The coordination number of each ion in $$AB$$ is:

Solid State

The coordination number of $$Al$$ in the crystalline state of $$AlCl_{3}$$ is:

Solid State

(i) What is meant by the term 'coordination number'? (ii) What is the coordination number of atoms: (a) in a cubic close-packed structure? (b) in a body-centred cubic structure?

Solid State

Which of the following statement is not true?

Solid State

$$NaCl$$ type crystal (with coordination no. 6:6) can be converted into $$CsCl$$ type crystal (with coordination no. 8:8) by applying:

Solid State

Write the coordination number of NaCl crystals.

Solid State

Write the coordination number of CsCl crystals.

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