Advertisements
Advertisements
प्रश्न
Which of the following is not the characteristic of ionic solids?
विकल्प
Very low value of electrical conductivity in the molten state.
Brittle nature
Very strong forces of interactions.
Anisotropic nature
Advertisements
उत्तर
Very low value of electrical conductivity in the molten state.
Explanation:
| Type of solid | Con- stituent particles | Bonding/ attractive forces | Exam- ples | Physical nature | Electrical conductivity |
Melting point |
| Ionic solids | Ions | Coulom- bic or electro- static |
NaCl, MgO, ZnS, CaF2 | Hard but brittle | Insulators in solid state but conduc- tors in mol- ten state and in aqueous solutions |
High |
APPEARS IN
संबंधित प्रश्न
The major binding force in diamond is_______________ .
(a) Covalent bond
(b) Ionic bond
(c) Metallic bond
(d) Co-ordinate covalent bond
What is the covalency of nitrogen in N2O5?
Explain the basis of similarities between metallic and ionic crystals.
An ionic compound crystallises in FCC type structure with ‘A’ ions at the centre of each face and ‘B’ ions occupying corners of the cube. The formula of compound is _______.
Classify the following solids into different types:
a. Ammonium phosphate
b. Brass
c. S8 molecule
d. Diamond
Classify the following molecular solids into different types:
- HCl
- CO2
- Solid ice
- SO2
Define Anisotropy.
In calcium fluoride, having the flurite structure the coordination number of Ca2+ ion and F− Ion are ____________.
____________ is an example of molecular crystal.
What type of interaction hold the molecules together in a polar molecular solid?
Silicon carbide is an example of ____________.
An AB2 type structure is found in ____________.
The major binding force of diamond, silicon and quartz is ____________.
Which of the following cannot be regarded as molecular solid?
(i) SiC (Silicon carbide)
(ii) AlN
(iii) Diamond
(iv) I2
Why are liquids and gases categorised as fluids?
Among the following which is the best description of water in the solid phase?
Graphite is a ______.
Mention the res of the following solid:
CO2
