Chemistry - Solid State Question with Solution | TestHub

ChemistrySolid StatePacking in lonic SolidsMedium2 minQB
ChemistryMediummultiple choice

Atoms of metals , and z form face-centred cubic (fcc) unit cell of edge length Lx , body-centred cubic (bcc) unit cell of edge length Ly, and simple cubic unit cell of edge length Lz, respectively. If and , then the correct statement (s) is (are) [Given : , My, and Mz are molar masses of metals x, y, and z, respectively. rx, ry, and rz are atomic radii of metals x, y, and z , respectively.]

Options:(select one or more)

Answer:
A, B, D
Solution:

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Now, and .

So, , , .

This simplifies to , , .

 

The density is given by for X and for Y.

Now, or .

 

Therefore, .

Hence, .

Stream:JEESubject:ChemistryTopic:Solid StateSubtopic:Packing in lonic Solids
2mℹ️ Source: QB

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