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JEE Main Chemistry question

ChemistryThe Solid StateJEE Main

Not in JEE Main or NEET syllabus

Lithium borohydride crystallises in an orthorhombic system with 4 molecules per unit cell. The unit cell dimensions are Å, Å and Å. If the molar mass is 21.76, then the density of the crystal is:

Answer: (A)

Solution

For a non-cubic cell, . Here , , and Å. So \dfrac{4×21.76}{6.02×10^{23}×215.42×10^{-24}}$

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Question ID VK-141719