Molecular Compounds

Molecular compound are not natural compounds that take the type of discrete molecules. Examples include such acquainted substances together water \(\left( \ceH_2O \right)\) and also carbon dioxide \(\left( \ceCO_2 \right)\). These compounds are very different native ionic compounds prefer sodium chloride \(\left( \ceNaCl \right)\). Ionic link are developed when steel atoms shed one or much more of your electrons come nonmetal atoms. The result cations and anions space electrostatically attracted to each other.

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So what stop the atom of a molecule together? quite than developing ions, the atom of a molecule re-superstructure their electrons in such a means that a bond forms between a pairof atoms. In a carbon dioxide molecule, there are two of this bonds, each occurring between the carbon atom and one of the two oxygen atoms.

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api/deki/files/78189/CK12_Screenshot_7-11-2.png?revision=1&size=bestfit&width=113&height=201" />Figure \(\PageIndex2\): Nitrogen dioxide \(\left( \ceNO_2 \right)\) is a reddish-brown toxic gas the is a prominent air pollutant developed by internal burning engines.

Naming binary (two-element) molecule compounds is similar to naming basic ionic compounds. The first element in the formula is simply listed using the surname of the element. The second element is named by taking the stem of the aspect name and adding the suffix -ide. A mechanism of number prefixes is provided to clues the number of atoms in a molecule. Table \(\PageIndex1\) lists these numerical prefixes.

Table \(\PageIndex1\): number Prefixes because that Naming Binary Covalent compounds Number of atom in CompoundPrefix ~ above the name of the Element
1 mono-*
2 di-
3 tri-
4 tetra-
5 penta-
6 hexa-
7 hepta-
8 octa-
9 nona-
10 deca-

*This prefix is not provided for the an initial element’s name.

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Exercise \(\PageIndex1\)

Write the name for each compound.

CF4 SeCl2 SO3 Answer a: carbon tetrafluoride Answer b: selenium dichloride Answer c: sulfur trioxide