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Electrovalent compounds have ..............

Electrovalent compounds have .................. (high/low) melting points.

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Fill in the blanks from the choices given below: Electrovalent compounds have a..................... (low/high) boiling point.

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Fill in the blanks with the correct words from the brackets. Melting and boiling points of covalent compounds are generally ................ (low / high).

Zn, Cd and.......have.....melting points.

Organic compounds have .........melting and boiling points.

[i] Incovalent compounds, the bond is formed due to __ [sharing/ transfer] of electrons. [ii] Electrovalent compounds have a__ [low/ high] boiling point. [iii] A milecule of __ contains a triple bond. [hydrogen, ammonia, nitrogen].

Explain the following: lonic compounds have high melting point and boiling point while covalent compounds have low melting and boiling points.

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Covalent compounds have low m.p. because :

Explain the following: Covalent compounds usually have low melting and boiling points.

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