CBSE Class 12-science Answered
The well known mineral fluorite is chemically
calcium fluoride. It is know that in one unit cell of this mineral, there are
4 Ca2+ ions and 8 F- ions and that Ca2+ ions
are arranged in fcc lattice. The F- ions fill all the tetrahedral
holes in the face centred cubic lattice of Ca2+ions. The edge of
the unit cell is 5.4610-8 cm in length. The density of the
solid is 3.18 g cm-3. Use this information to calculate Avogadro's
number (Molar mass of CaF2 = 78.08 g mol-1)
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Answered by | 04 Jun, 2014, 03:23: PM
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