1.

PbS has NaCl type structure. The distance between \[P{{b}^{2+}}\] and \[{{S}^{2-}}\] ions is 297 pm. What is the volume of unit cell of PbS?

A. \[209.6\times {{10}^{-24}}c{{m}^{3}}\]
B. \[207.8\times {{10}^{-23}}c{{m}^{3}}\]
C. \[22.3\times {{10}^{-23}}c{{m}^{3}}\]
D. \[209.8\times {{10}^{-23}}c{{m}^{3}}\]
Answer» B. \[207.8\times {{10}^{-23}}c{{m}^{3}}\]


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