Sodium (Na = 23) crystallizes in bcc arrangement with the interfacial separation between the atom at the edge 53.6 pm. The density of sodium crystal is:
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a
2.07 g/cc
b
2.46 g/cc
c
1.19 g/cc
d
2.23 g/cc
answer is C.
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Detailed Solution
a−2r=53.6pm also 4r=3a⇒ a−32a=53.6⇒ a=53.6×22−3=400pm Density (ρ)=2×236.023×1023×43×10−24=1.19g/cc