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QAIPMT-2008-Ch-2234: NEET 2008 Chemistry - Class 12 AIPMT-2008-Ch-2234 Solution: A strong base can abstract an \( \)-hydrogen from ketone alkane …
A strong base can abstract an -hydrogen from ketone alkane alkene amine
Multiple Choice Options
- A The number of carbon atoms in a unit cell of diamond is 4
- B The number of Bravais lattices in which a crystal can be categorized is 14
- C The fraction of the total volume occupied by the atoms in a primitive cell is 0.48.
- D Molecular solids are generally volatile.
Step-by-Step Verified Solution
Packing fraction for a cubic unit cell is given by
f = Z _ 4 3 � r 3 a 3
where a = edge length, r = radius of cation and
anion.
Efficiency of packing in simple cubic or primitive
cell = �/6 = 0.52 or 52 %
It means 52 % of unit cell is occupied by atoms and
48 % is empty.