The well known mineral fluorite is chemically calcuim fluride. It is well known that in one unit of this mineral, there are4 Ca^(2+)ions and8 F^(-) ions, and thatCa^(2+)ions are arranged in a fcc lattice. TheF^(-)ions fill all the tetrahedral holes in the face - centred cubic lattice ofCa^(2+) ions. The edge of the unit cell is5.46 xx 10^(-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 ofCaF_(2)= 78.08 " g mol" ^(-1))

The well known mineral fluorite is chemically calcuim fluride. It is w

1.	The well known mineral fluorite is chemically calcuim fluride. It is well known that in one unit of this mineral, there are4 Ca^(2+)ions and8 F^(-) ions, and thatCa^(2+)ions are arranged in a fcc lattice. TheF^(-)ions fill all the tetrahedral holes in the face - centred cubic lattice ofCa^(2+) ions. The edge of the unit cell is5.46 xx 10^(-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 ofCaF_(2)= 78.08 " g mol" ^(-1))
Answer» ANSWER :(a) 51.8 (B) `11 . 62 xx 10^(23) `