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प्रश्न
Compare the properties of ionic compounds and covalent compounds.
List four differences in properties between covalent compounds and ionic compounds.
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उत्तर
| Sr. No. | Ionic compound | Covalent compound |
| 1. | Ionic compounds are usually crystalline solids. | Covalent compounds are usually liquids or gases. |
| 2. | Ionic compounds have high melting and boiling points. | Covalent compounds have low melting and boiling points. |
| 3. | Ionic compounds are usually soluble in water. | Covalent compounds are usually insoluble in water. |
| 4. | Ionic compounds conduct electricity when dissolved in water or melted. | Covalent compounds do not conduct electricity. |
| 5. | Ionic compounds are insoluble in organic solvents. | Covalent compounds are soluble in organic solvents. |
Notes
Students should refer to the answer according to their questions.
संबंधित प्रश्न
What would be the electron dot structure of a molecule of sulphur which is made up of eight atoms of sulphur? (Hint – the eight atoms of sulphur are joined together in the form of a ring.)
What type of bonds are present in methane (CH4) and sodium chloride (NaCl)?
Give two general properties of ionic compounds and two those of covalent compounds.
State one test by which sodium chloride can be distinguished from sugar.
Name one covalent compound containing chlorine.
Draw the electron-dot structure of HCl compound and state the type of bonding.
Explain why, diamond is hard while graphite is soft (though both are made of carbon atoms).
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
Two non-metals combine with each other by the sharing of electrons to form a compound X.
(a) What type of chemical bond is present in X?
(b) State whether X will have a high melting point or low melting point.
(c) Will it be a good conductor of electricity or not?
(d) Will it dissolve in an organic solvent or not?
An element A has 4 valence electrons in its atom whereas element B has only one valence electron in its atom. The compound formed by A and B does not conduct electricity. What is the nature of chemical bond in the compound formed? Give its electron-dot structure.
What is the difference between ionic compounds and polar covalent compounds?
Explain the following:
polar covalent compounds electricity.
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Water
Explain the following:
Polar covalent compounds are good conductors of electricity.
Explain the bonding in methane molecule using electron dot structure.
An element L consists of molecules.
What type of bonding is present in the particles that make up L?
State the type of bonding in the following molecule.
Water
Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the options A, B, C and D given below:
The type of bonding in X will be ______.
Give an example for each of the following statement.
Formation of coordinate covalent bond between NH3 ➝ BF3 molecules
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of ______.
