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1.
How many tetrahedral holes are occupied in diamond?
2.
The flame colours of metal ions are due to
3.
Which of the following statements is correct?
4.
A compound is formed by elements 
and 
. This crystallises in the cubic structure where the A atoms are at the corners of the cube and B atoms are at the body centres. The simplest formula of the compound is
and . This crystallises in the cubic structure where the A atoms are at the corners of the cube and B atoms are at the body centres. The simplest formula of the compound is
5.
Which pairs shows isomorphism
6.
The elements of symmetry in a crystal are :
7.
How many octahedral and tetrahedral holes are present per unit cell in a face centred cubic arrangement of atoms?
8.
A solid has structure in which 'W' atoms are located at the corners of a cubic lattice 'O' atoms at the centre of edge and Na atoms at the centre of cube. The formula for the compound is
9.
Which do not form amalgam with 
?
?
10.
A crystal of 
is :
is :