Which of the following are properties of Crystalline solids?
Which of the following are properties of Crystalline solids?
The correct options are
A They have a sharp melting point
B They are anisotropic in nature
C The arrangement order of particles is of long range order
D It consists of a large number of small crystals each of which has the same regular pattern or arrangement of particles.
Let’s talk about crystalline solids. First thing we need to know about crystalline solids are:
→ We can think of a solid as a very big crystal which consists of very small crystals which will have regular and repeating arrangement of particles.
→ It will have a fixed melting point because the bonds will be similar between particles.
→ They are anisotropic in nature, that is, they show different physical properties such as refractive index, electrical resistance (or conductance), thermal expansion, etc., along different directions in the same crystal. This is due to different arrangement of particles in different directions, which results in the value of same physical property to be different along each direction, as shown in fig. NaCl and quartz are some examples of crystalline solids.
Anistropy in crystals is due to different arrangement of particles along different directions.
→ The arrangement of particles is in long range order.
→ That means positions repeat in space in a regular array.
Therefore, all the options are correct.
A
They have a sharp melting point
B
They are anisotropic in nature
C
The arrangement order of particles is of long range order
D
It consists of a large number of small crystals each of which has the same regular pattern or arrangement of particles.
Let’s talk about crystalline solids. First thing we need to know about crystalline solids are:
→ We can think of a solid as a very big crystal which consists of very small crystals which will have regular and repeating arrangement of particles.
→ It will have a fixed melting point because the bonds will be similar between particles.
→ They are anisotropic in nature, that is, they show different physical properties such as refractive index, electrical resistance (or conductance), thermal expansion, etc., along different directions in the same crystal. This is due to different arrangement of particles in different directions, which results in the value of same physical property to be different along each direction, as shown in fig. NaCl and quartz are some examples of crystalline solids.
Anistropy in crystals is due to different arrangement of particles along different directions.
→ The arrangement of particles is in long range order.
→ That means positions repeat in space in a regular array.
Therefore, all the options are correct.
