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प्रश्न
Which of the following is not the characteristic of ionic solids?
पर्याय
Very low value of electrical conductivity in the molten state.
Brittle nature
Very strong forces of interactions.
Anisotropic nature
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 |
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संबंधित प्रश्न
Give an example each of a molecular solid and an ionic solid.
Explain Ionic solids are hard and brittle.
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 _______.
A compound crystallizes in bcc structure. What is unit cell edge length if diameter of its atom is 120 pm?
Graphite and diamond are ____________.
Assertion: monoclinic sulphur is an example of a monoclinic crystal system
Reason: for a monoclinic system, a ≠ b ≠ c and α = γ = 90°, β ≠ 90°
Solid X is a very hard electrical insulator in solid as well as in molten state. It melts at extremely high temperature. Solid X is a ____________.
Which of the following exists as covalent crystals in the solid state?
Which of the following is not true about the ionic solids?
Why are liquids and gases categorised as fluids?
