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प्रश्न
Give two general properties of ionic compounds and two those of covalent compounds.
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उत्तर
| Ionic Compounds | Covalent Compounds |
| Ionic compounds usually have high melting and boiling points. | Covalent compounds usually have low melting and boiling points. |
| Ionic compounds generally conduct electricity when dissolved in water or in a molten state. | Covalent compounds usually do not conduct electricity. |
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संबंधित प्रश्न
Choose the most appropriate answer from the following list of oxides which fit the description.
A covalent oxide of a metalloid.
Name the following:
The property of element by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.
How does graphite act as a lubricant?
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
What type of bonds are present in CH4 molecule? Draw their electron-dot structures.
What type of chemical bonds are formed by carbon? Why?
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of nitrogen, N2, is formed from two nitrogen atoms. What name is given to this type of bonding? (Atomic number of nitrogen is 7)
Explain why, graphite can be used as a lubricant but diamond cannot.
One of the following contains a double bond as well as single bonds. This is:
(a) CO2
(b) O2
(c) C2H4
(d) C2H2
What are the conditions necessary for the formation of covalent molecules?
Give examples for the following:
Two solid covalent compounds.
Explain the following:
Polar covalent compounds are good conductors of electricity.
State the type of bond formed when the combining atom has zero E.N. difference.
Name two carbon compounds used in day-to-day life.
The I.U.P.A.C name of CH3CH2CH = CH2 is?
Which of the following statements are correct for carbon compounds?
- Most carbon compounds are good conductors of electricity.
- Most carbon compounds are poor conductors of electricity.
- Force of attraction between molecules of carbon compounds is not very strong.
- Force of attraction between molecules of carbon compounds is very strong.
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
Show the covalent bond formation in nitrogen molecule.
