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Questions
Give the characteristic properties of covalent compounds.
Give two general properties of covalent compounds.
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Solution
- Covalent compounds are usually liquids or gases. Only some of them are solids.
- Covalent compounds usually have low melting points and low boiling points.
- Covalent compounds are usually insoluble in water, but they are soluble in organic solvents.
- Covalent compounds do not conduct electricity.
Notes
Students should refer to the answer according to their questions.
RELATED QUESTIONS
List three characteristic properties of covalent compounds.
Choose the correct answer from the options given below:
Which of the following is a common characteristic of a covalent compound?
1) high melting point
2) consists of molecules
3) always soluble in water
4) Conducts electricity when it is in the molten state
Which inert gas does the Cl atom in HCl resemble in electron arrangement?
The electronic configurations of three elements X, Y and Z are as follows:
| X | 2, 4 |
| Y | 2, 7 |
| Z | 2, 1 |
- Which two elements will combine to form an ionic compound?
- Which two elements will react to form a covalent compound?
Give reasons for your choice.
Explain the following term with example.
Alkane
Give the appropriate term defined by the statement given below:
The covalent bond in which the electrons are shared equally between the combining atoms.
Choose the correct answer from the options given below
Which one is not example of polar covalent compound?
Potassium (Atomic No. 19) and chlorine (Atomic No. 17) react to form a compound. On the basis of electronic concept, explain
(i) oxidation
(ii) reduction
(iii)oxidising agent
(iv)reducing agent
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Mineral acids are stronger acids than carboxylic acids because
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- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
