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प्रश्न
Classify the following solids into different types:
a. Ammonium phosphate
b. Brass
c. S8 molecule
d. Diamond
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उत्तर
a. Ammonium phosphate - Ionic solid
b. Brass - Metallic solid
c. S8 molecule - Molecular solid
d. Diamond - Covalent or network solid
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संबंधित प्रश्न
Ionic solids conduct electricity in molten state but not in solid state. Explain
Explain ionic solids are hard and brittle.
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Distinguish between crystalline solids and amorsphous solids.
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?
Sodium crystallizes in bcc structure. If the edge length of unit cell is 4.3 × 10-8 cm, the radius of Na atom 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 ____________.
Solid CO2 is an example of ____________.
Define unit cell.
Classify the following solid.
P4
Classify the following solid.
NaCl
If NaCl is doped with 10−2 mol percentage of strontium chloride, what is the concentration of cation vacancy?
Select the INCORRECT match:
Which of the following is an example of molecular solid?
____________ is an example of molecular crystal.
Fullerene is an example of ____________.
Which among the following is NOT a polar molecular solid?
Which among the following is an example of network solid?
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Nature of binding forces present in carbon dioxide molecules in solid state are ____________.
Order of increasing melting points among H2O(s), C(s), CS2 and Sn is ____________.
What type of interaction hold the molecules together in a polar molecular solid?
Ionization enthalpy is lowest in ____________.
Which among the following is an example of non-polar molecule?
Silicon carbide is an example of ____________.
MgO has the structure of NaCl. The coordination number of the ions in MgO is ____________.
The compound, found in nature in gas phase but ionic in solid state is ____________.
Solid CH4 is ____________.
An example of a covalent crystalline solid is ____________.
Among solids, the highest melting point is exhibited by ____________.
Which of the following exists as covalent crystals in the solid state?
The major binding force of diamond, silicon and quartz is ____________.
In graphite electrons are ____________.
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Which of the following is a network solid?
Iodine molecules are held in the crystals lattice by ______.
NaCl type crystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying ____________.
Which of the following is not true about the ionic solids?
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.
Which of the following cannot be regarded as molecular solid?
(i) SiC (Silicon carbide)
(ii) AlN
(iii) Diamond
(iv) I2
Inspite of long range order in the arrangement of particles why are the crystals usually not perfect?
The covalent bond length is the shortest in which one of the following bonds?
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 ______.
Mention the res of the following solid:
Ice
What are intermolecular forces of attraction involved in molecular crystals?
Quartz is which type of crystal?
