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प्रश्न
What is the difference between ionic compounds and covalent compounds?
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उत्तर
Ionic compounds:
- They are made up of ions and are generally crystalline solids with high melting and boiling points.
- They are soluble in water
- They are good conductors of electricity in aqueous solution and molten state.
- They are not true molecules, but rather a collection of positive and negative ions.
Covalent compounds:
- They are made up of molecules and can exist as soft solids or liquids or gases with low melting and boiling points.
- They are generally insoluble in water
- They are poor conductors of electricity.
- They are true molecules.
संबंधित प्रश्न
Write the electron-dot structure for the following molecule.
Cl2
The atomic numbers of four elements P, Q, R and S are 6, 10, 12 and 17 respectively. Which two elements can combine to form a covalent compound?
(a) P and R
(b) Q and S
(c) P and S
(d) R and S
The number of carbon atoms joined in a spherical molecule of buckminsterfullerene is:
(a) fifty
(b) sixty
(c) seventy
(d) ninety
Explain the following:
polar covalent compounds electricity.
Draw all possile structural formulae of compound from their molecular formula given below.
C4H10
Give examples for the following:
Two solid covalent compounds.
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Define the functional group and complete the following table.
| S.I. No. | Functional Group | Compound | Formula |
| (1) | ______________ | _______________ |
C2H5OH |
| (2) | _______________ | _______________ | CH3CHO |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Which of the following statements are usually correct for carbon compounds? These
- are good conductors of electricity
- are poor conductors of electricity
- have strong forces of attraction between their molecules
- do not have strong forces of attraction between their molecules.
