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CBSE Class 12-science Answered

Silver crystallizes in face-centred cubic unit cell. Each side of this unit cell has a length of 400 pm. Calculate the radius of the silver atom. (Assume the atoms just touch each other on the diagonal across the face of the unit cell. That is each face atom is touching the four corner atoms.)
Asked by Topperlearning User | 17 Jun, 2016, 09:55: AM
answered-by-expert Expert Answer

Given, silver crystallizes in fcc unit cell

Where e is the radius of the silver atom and a is the edge length

Now, edge length = 400 pm = cm

Thus,

Thus, the radius of the silver atom was found to be 141.4 pm

Answered by | 17 Jun, 2016, 11:55: AM

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