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Potassium crystallies in a bcc unit cell. The mass of one unit cell is? 
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Asked by Mohammadafzal70933 | 06 May, 2019, 09:21: AM
answered-by-expert Expert Answer
W e space k n o w comma space D e n s i t y space o f space U n i t space c e l l space left parenthesis d right parenthesis space equals space fraction numerator M cross times Z over denominator N subscript A cross times a cubed end fraction W h e r e space M space equals space M o l a r space m a s s space o f space p o t a s s i u m space equals space 39 g semicolon space Z space equals space N o. space o f space a t o m s space p e r space u n i t space c e l l space equals space 2 space left parenthesis B C C right parenthesis N subscript A space equals space 6.023 cross times 10 to the power of 23 m a s s space o f space 1 space u n i t space c e l l space equals space D e n s i t y space left parenthesis d right parenthesis space cross times space V o l u m e space o f space U n i t space c e l l space left parenthesis a cubed right parenthesis space equals space fraction numerator M cross times Z over denominator N subscript A end fraction space equals fraction numerator 39 cross times 2 over denominator 6.023 cross times 10 to the power of 23 end fraction space g equals space 1.295 cross times 10 to the power of negative 22 end exponent space g space left parenthesis O p t i o n space b right parenthesis
Answered by Sumit Chakrapani | 06 May, 2019, 10:35: AM

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