jaidenkenna2001

31.08.2019 • 

Chemistry

Which statement best describes the properties of covalent compounds?
1. they are always solid at room temperature, are brittle, and have a high melting point.
2. they may be gases, liquids, or solids at room temperature, and have a low melting and boiling point.
3. they are always composed of an equal proportion of cations to anions.
4. they are always liquid at room temperature, and have a high melting and boiling point.
5. they are good conductors of heat and electricity, and are ductile and malleable.

Ответ:

justinhudson17

01.01.2022

Chemistry

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Covalent network. A solid that is extremely hard, that has a very high melting point, and that will not conduct electricity either as a solid or when molten is held together by a continuous three-dimensional network of covalent bonds. Examples include diamond, quartz (SiO 2 ), and silicon carbide (SiC). The electrons are constrained in pairs to a region on a line between the centers of pairs of atoms.

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Ответ:

joelpimentel

21.04.2021

Chemistry

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It floats, depending on the object

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