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The number of unit cells in the Ca atom ...

The number of unit cells in the `Ca` atom lies on the surface of a cubic crystal that is `1.0 cm` in length is

A

`9.17 xx 10^(23)`

B

`9.17 xx 10^(22)`

C

`2 xx 9.17 xx 10^(23)`

D

`2 xx 9.17 xx 10^(22)`

Text Solution

Verified by Experts

The correct Answer is:
B
Volume of crystal `= (1.0 cm)^(3) = (10^(-2)m)^(3) = 10^(-6) m^(3)`
Number of unit cells `= (10^(-6)m^(3))/(10.9 xx 10^(-3) m^(3)) = 9.17 xx 10^(22)`
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