An example of a substance possessing giant covalent structure is
Silica (SiO2) has giant covalent structure.
Quartz is a crystalline variety of
X – ray analysis shows that the unit cell length in NaCl is 562.8 pm. Calculate the density you would expect on this basis,
NA = 6.023 × 1023 mol-1.
If the distance between Na+ and Cl- ions in NaCl crystal is ‘a’ pm what is the length of the cell edge?
A crystalline solid
The three states of matter are solid, liquid and gas. Which of the following statement is/are true about them?
A compound is formed by elements A and B. this crystallizes in the cubic structure when atoms A are at the corners of the cube and atoms B are at the centre of the body. The simplest formula of the compound is
Under which category iodine crystals are placed among the following?
Which of the following is non – crystalline solid?
In face centred cubic unit cell edge length is
The edge of unit cell of fcc Xe crystal is 620 pm. The radius of Xe atom is