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the edge lengh of nacl unit cell is 564 pm what is the density of nacl if its crystalizes in fcc

the edge lengh of nacl unit cell is 564 pm what is the density of nacl if its crystalizes in fcc

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1 Answers

samarth saxena
37 Points
9 years ago

given

a = 564pm =  564*10-10cm  

fcc     z= 4

molecular mass of nacl (M)=58.44g/mol

 

we know that

density D= MZ/NA* a3

D= 588.44 g * 4/ 6.022*1023 * (564 * 10-10)

 

DENSITY (D)= 0.216367 g/cm3

 

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