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प्रश्न
Answer the following in one or two sentences.
A solid is hard, brittle and electrically nonconductor. Its melt conducts electricity. What type of solid is it?
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उत्तर
Ionic solids are hard and brittle. They are nonconductors of electricity in solid-state. However, they are good conductors when melted. Hence, the given solid is an ionic solid.
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संबंधित प्रश्न
Give an example each of a molecular solid and an ionic solid.
Explain the basis of similarities between metallic and ionic crystals.
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 _______.
How are the crystalline solids classified?
Sodium crystallizes in bcc structure. If the edge length of unit cell is 4.3 × 10-8 cm, the radius of Na atom is ______.
Classify the following solid:
Pb
Graphite and diamond are ____________.
Solid CO2 is an example of ____________.
In calcium fluoride, having the flurite structure the coordination number of Ca2+ ion and F− Ion are ____________.
Give any three characteristics of ionic crystals.
Classify the following solid.
P4
Which of the following is an example of molecular solid?
Fullerene is an example of ____________.
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 ____________.
Ionization enthalpy is lowest in ____________.
The hardest substance among the following is:
An AB2 type structure is found in ____________.
An example of a covalent crystalline solid is ____________.
Among solids, the highest melting point is exhibited by ____________.
NaCl type crystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying ____________.
How many chloride ions are surrounding sodium ions in sodium chloride crystal?
Who introduced the term covalent bond?
The covalent bond length is the shortest in which one of the following bonds?
Which of the following molecules is non-polar in nature?
Mention the res of the following solid:
CO2
