Advertisements
Advertisements
प्रश्न
Solid A is a very hard electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it?
Advertisements
उत्तर
The given properties are the properties of a covalent or network solid. Therefore, the given solid is a covalent or network solid. Examples of such solids include diamond (C) and quartz (SiO2).
संबंधित प्रश्न
What is the covalency of nitrogen in N2O5?
Give an example each of a molecular solid and an ionic solid.
Distinguish between crystalline solids and amorsphous solids.
Answer the following in brief.
Distinguish between ionic solids and molecular solids
Define unit cell.
Give any three characteristics of ionic crystals.
Which of the following is TRUE about molecular solids?
Dry ice is an example of ____________.
Fullerene is an example of ____________.
Order of increasing melting points among H2O(s), C(s), CS2 and Sn is ____________.
London forces are present in ____________.
An example of a covalent crystalline solid is ____________.
Which of the following exists as covalent crystals in the solid state?
Which one of the following forms a molecular solid when solidified?
Which of the following is not the characteristic of ionic solids?
Graphite cannot be classified as ______.
How many chloride ions are surrounding sodium ions in sodium chloride crystal?
An excess of potassium ions makes KCl crystals appear violet or lilac in colour since:
(i) some of the anionic sites are occupied by an unpaired electron.
(ii) some of the anionic sites are occupied by a pair of electrons.
(iii) there are vacancies at some anionic sites.
(iv) F-centres are created which impart colour to the crystals.
Calculate the angle at which first order reflection will occurs in an X-ray spectrometer when x ~ rays of wavelength \[\ce{1.54 \overset{\circ}{A}}\] are diffracted by the atoms of a crystal given that inter planer distance is \[\ce{0.04 \overset{\circ}{A}}\]
A reddish-pink substance on heating gives off a vapour which condenses on the sides of the test tube and the substance turns blue. If on cooling water is added to the residue it turns to original colour. The substance is ______.
