Chemistry - Solid State Question with Solution | TestHub

ChemistrySolid StateCubic CrystalsMedium2 minQB

ChemistryMediummultiple choice

The co-ordination number of fcc structure for metals is 12, since

Answer:

B, C

Solution:

In FCC (face-centered cubic) structure, each atom has a coordination number of 12.

Each atom touches 4 atoms in the same layer, 4 atoms in the layer above, and 4 atoms in the layer below:

$4 + 4 + 4 = 12$

The same coordination can also be viewed as 6 atoms in the same layer, 3 above, and 3 below:

$6 + 3 + 3 = 12$

Correct options: B, C

Stream:JEESubject:ChemistryTopic:Solid StateSubtopic:Cubic Crystals

⏱ 2mℹ️ Source: QB

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