Name each molecular compound. a. CO b. NI₃ c. SiCl₄ d. N₄Se₄

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Identify the elements in each compound and their respective prefixes based on the number of atoms present.

For CO, recognize that 'C' stands for carbon and 'O' stands for oxygen. Since there is one oxygen atom, use the prefix 'mono-' for oxygen, resulting in carbon monoxide.

For NI3, 'N' stands for nitrogen and 'I' stands for iodine. Since there are three iodine atoms, use the prefix 'tri-' for iodine, resulting in nitrogen triiodide.

For SiCl4, 'Si' stands for silicon and 'Cl' stands for chlorine. Since there are four chlorine atoms, use the prefix 'tetra-' for chlorine, resulting in silicon tetrachloride.

For N4Se4, 'N' stands for nitrogen and 'Se' stands for selenium. Since there are four atoms of each, use the prefix 'tetra-' for both, resulting in tetranitrogen tetraselenide.

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Molecular Compounds

Molecular compounds are formed when two or more nonmetals bond together by sharing electrons. They typically have distinct properties, such as lower melting and boiling points compared to ionic compounds. The naming of molecular compounds often involves using prefixes to indicate the number of atoms of each element present in the compound.

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Naming Molecular Compounds

Naming Conventions

The naming of molecular compounds follows specific conventions, primarily using prefixes to denote the number of atoms. For example, 'mono-' for one, 'di-' for two, 'tri-' for three, and so on. The first element in the compound is named first, followed by the second element, which is modified to end in '-ide'.

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Rules for Naming Ketones

Chemical Symbols and Formulas

Chemical symbols represent elements, while chemical formulas indicate the composition of a compound. For instance, 'CO' represents carbon monoxide, where 'C' is carbon and 'O' is oxygen. Understanding these symbols and how they combine is essential for correctly identifying and naming molecular compounds.

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