Lithium borohydride crystallizes in an orthorhombic system with 4 molecules per unit cell. The unit cell dimensions are \[a=6.8\text{ }\overset{o}{\mathop{A}}\,,\,b=4.4\overset{o}{\mathop{A}}\,\] and \[c=7.2\overset{o}{\mathop{A.}}\,\] If the molar mass is 21.76, then the density of crystals is:

\[1.6708\text{ }g\text{ }c{{m}^{-3}}\]

\[0.6708\text{ }g\text{ }c{{m}^{-2}}\]

\[2.6708\text{ }g\,\,c{{m}^{-3}}\]

Lithium borohydride crystallizes in an orthorhombic system with 4 mole

1.	Lithium borohydride crystallizes in an orthorhombic system with 4 molecules per unit cell. The unit cell dimensions are \[a=6.8\text{ }\overset{o}{\mathop{A}}\,,\,b=4.4\overset{o}{\mathop{A}}\,\] and \[c=7.2\overset{o}{\mathop{A.}}\,\] If the molar mass is 21.76, then the density of crystals is:
A.	\[0.6708\text{ }g\text{ }c{{m}^{-2}}\]
B.	\[1.6708\text{ }g\text{ }c{{m}^{-3}}\]
C.	\[2.6708\text{ }g\,\,c{{m}^{-3}}\]
D.	None of these.
Answer» B. \[1.6708\text{ }g\text{ }c{{m}^{-3}}\]

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Lithium borohydride crystallizes in an orthorhombic system with 4 molecules per unit cell. The unit cell dimensions are \[a=6.8\text{ }\overset{o}{\mathop{A}}\,,\,b=4.4\overset{o}{\mathop{A}}\,\] and \[c=7.2\overset{o}{\mathop{A.}}\,\] If the molar mass is 21.76, then the density of crystals is:

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