For the following pairs of ions, use the principle of...

For the following pairs of ions, use the principle of electrical neutrality to predict the formula of the binary compound that the ions are most likely to form. a. $\mathrm{Na}^{+}$ and $\mathrm{S}^{2-}$ b. $\mathrm{K}^{+}$ and $\mathrm{Cl}^{-}$ c. $\mathrm{Ba}^{2+}$ and $\mathrm{O}^{2-}$ d. $\mathrm{Mg}^{2+}$ and $\mathrm{Se}^{2-}$ e. $\mathrm{Cu}^{2+}$ and Br $^{-}$ f. $\mathrm{Al}^{3+}$ and $\mathrm{I}^{-}$ g. $\mathrm{Al}^{3+}$ and $\mathrm{O}^{2-}$ h. $\mathrm{Ca}^{2+}$ and $\mathrm{N}^{3-}$

For the following pairs of ions, use the principle of electrical neutrality to predict the formula of the binary compound that the ions are most likely to form.
a. $\mathrm{Na}^{+}$ and $\mathrm{S}^{2-}$
b. $\mathrm{K}^{+}$ and $\mathrm{Cl}^{-}$
c. $\mathrm{Ba}^{2+}$ and $\mathrm{O}^{2-}$
d. $\mathrm{Mg}^{2+}$ and $\mathrm{Se}^{2-}$
e. $\mathrm{Cu}^{2+}$ and Br $^{-}$
f. $\mathrm{Al}^{3+}$ and $\mathrm{I}^{-}$
g. $\mathrm{Al}^{3+}$ and $\mathrm{O}^{2-}$
h. $\mathrm{Ca}^{2+}$ and $\mathrm{N}^{3-}$

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Principle of Electrical Neutrality

This principle states that the total positive charge of the cations and the total negative charge of the anions in a compound must sum to zero. It is central to determining the empirical formula of ionic compounds since the ratio of ions must be chosen such that their combined charges cancel each other out.

Ionic Charges and Stoichiometry

Ionic compounds are made by combining ions of known charges. The stoichiometry — or the ratio of ions — is determined by using the charges on the ions to balance the overall charge. This approach involves using the individual charges as subscripts in the formula to ensure that the total sum of positive and negative charges is zero.

Formation of Binary Ionic Compounds

Binary ionic compounds consist of two different elements: one is a metal that forms a cation and the other is a nonmetal that forms an anion. Understanding the charges associated with these ions allows one to predict the simplest whole-number ratio in which they combine to form a neutral compound.

Transcript

Please give Ace some feedback