Which of the following is incorrect for covalent compounds?

Low melting points

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Low boiling points

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Mostly insoluble in water

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Good conductors of electricity

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Solution

The correct option is D Good conductors of electricity

Covalent compounds are formed by the sharing of electrons.

Due to the presence of weak van der Waals force of attraction they have low melting and boiling points and are insoluble in water.

Since they don't have any ionic charge or free electrons, they are mostly poor conductor of electricity.

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Similar questions

Explain the following:
(a) Covalent compounds are generally gases or liquids or soft solids.
(b) Covalent compounds have low melting point and boiling point.
(c) Non-polar covalent compounds are insoluble in water.
(d) Polar covalent compounds are good conductors of electricity.

Q. Give reasons for the following statements
Why covalent compounds
(i) are bad conductors of electricity.
(ii) have low melting and boiling points.

State the reason why carbon can neither form $C^{4 +}$ cations nor $C^{4 -}$ anions but forms covalent compound
Also state the reason to explain why covalent compounds:
(i) Are bad conductors of electricity.
(ii) Have low melting and boiling points.

Explain the following :

(a) Electrovalent compounds conduct electricity in molten or aqueous state.

(b) Electrovalent compounds have a high melting point and boiling point while covalent compounds have low melting and boiling points.

Q. Covalent compounds have generally low melting and boiling points.

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