Label the following species as molecules or ions. (a) NO 3 – (b) NH 4 + (d) CH 3 CO 2 –

Step 1: Understand the difference between molecules and ions. A molecule is a group of two or more atoms held together by chemical bonds. An ion, on the other hand, is an atom or molecule that has gained or lost one or more electrons, giving it a net positive or negative charge.. Step 2: Look at the given species, NO_{3}^{-}. This species is composed of nitrogen and oxygen atoms, and it has a net charge of -1.. Step 3: Since the species has a net charge, it is not neutral. Molecules are neutral species, meaning they have no net charge.. Step 4: Therefore, NO_{3}^{-} is not a molecule.. Step 5: Since NO_{3}^{-} has a net charge, it is an ion. More specifically, because it has a negative charge, it is an anion.

Label the following species as molecules or ions. (a) NO3– (b) NH4+ (d) CH3CO2–

Step 1: Understand the difference between molecules and ions. A molecule is a group of two or more atoms held together by chemical bonds. An ion, on the other hand, is an atom or molecule that has gained or lost one or more electrons, giving it a net positive or negative charge. Step 2: Look at the given species, NO_{3}^{-}. This species is composed of nitrogen and oxygen atoms, and it has a net charge of -1. Step 3: Since the species has a net charge, it is not neutral. Molecules are neutral species, meaning they have no net charge. Step 4: Therefore, NO_{3}^{-} is not a molecule. Step 5: Since NO_{3}^{-} has a net charge, it is an ion. More specifically, because it has a negative charge, it is an anion.

Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory

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Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory

Problema 37a,b,d

Capitolo 6, Problema 37a,b,d

Label the following species as molecules or ions. (a) NO₃^– (b) NH₄⁺ (d) CH₃CO₂^–

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Step 1: Understand the difference between molecules and ions. A molecule is a group of two or more atoms held together by chemical bonds. An ion, on the other hand, is an atom or molecule that has gained or lost one or more electrons, giving it a net positive or negative charge.

Step 2: Look at the given species, NO₃^-. This species is composed of nitrogen and oxygen atoms, and it has a net charge of -1.

Step 3: Since the species has a net charge, it is not neutral. Molecules are neutral species, meaning they have no net charge.

Step 4: Therefore, NO₃^- is not a molecule.

Step 5: Since NO₃^- has a net charge, it is an ion. More specifically, because it has a negative charge, it is an anion.

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Molecules

Molecules are neutral entities formed when two or more atoms bond together through covalent bonds. They can consist of the same or different elements and are characterized by their specific molecular formulas. For example, a water molecule (H2O) consists of two hydrogen atoms and one oxygen atom.

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Heteronuclear Diatomic Molecules

Ions

Ions are charged species that result from the loss or gain of electrons by an atom or molecule. When an atom loses electrons, it becomes a positively charged cation, while gaining electrons results in a negatively charged anion. The nitrate ion (NO3-) is an example of a negatively charged ion, indicating it has gained an extra electron.

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Ion Formation

Chemical Nomenclature

Chemical nomenclature is the systematic naming of chemical species based on established rules. It helps in identifying whether a species is a molecule or an ion, as well as its composition. For instance, the notation NO3- indicates that it is a nitrate ion, which is essential for classifying it correctly in the context of the question.

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Chemical Properties

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