Naming Binary Ionic Compounds Containing Fixed Oxidation State Cations (Screencast)

Summary

This educational video explains how to name binary ionic compounds with fixed oxidation state cations. It outlines naming rules: cations are named first, followed by anions. For monatomic cations, the name is the same as the element, while anions are named by adding 'ide' to the element's root name. Examples include aluminum oxide, lithium nitride, and potassium iodide. The video also covers writing formulas for compounds like calcium sulfide and magnesium nitride, emphasizing the importance of correct nomenclature in chemistry.

Takeaways

• 🔬 The video teaches how to name binary ionic compounds with fixed oxidation state cations.
• 📝 When naming, the cation is named first followed by the anion.
• 🌟 Monatomic cations have the same name as their parent elements.
• ➕ Monatomic anions are named by adding 'ide' to the first part of the element's name.
• 📚 Group 1a metals form +1 ions, and Group 2a metals form +2 ions.
• 🔋 Group 5a nonmetals form -3 ions, and Group 6a nonmetals form -2 ions.
• 💧 Group 7a nonmetals form -1 ions, and hydrogen can form both a cation and an anion.
• 🧠 The video provides examples to practice naming compounds, such as aluminum oxide and lithium nitride.
• 📐 It also covers how to write formulas for compounds like calcium sulfide (CaS) and potassium iodide (KI).
• 🏆 The video concludes with practice questions to test understanding of naming and formulating binary ionic compounds.

Q & A

What is the primary rule when naming binary ionic compounds?

The primary rule when naming binary ionic compounds is that the cation is always named first, followed by the anion.

How is a monatomic cation named in binary ionic compounds?

A monatomic cation has the same name as its parent element.

What is the naming convention for monatomic anions in binary ionic compounds?

A monatomic anion is named by taking the first part of the element's name and adding 'ide' to the end.

Which group of metals typically forms 1 positive ions?

Group 1A metals typically form 1 positive ions.

How do group 2A metals differ in their ionic charge compared to group 1A metals?

Group 2A metals form 2 positive ions, which is one more positive charge compared to group 1A metals.

What is the charge typically associated with group 5A nonmetals in binary ionic compounds?

Group 5A nonmetals typically form 3 negative ions in binary ionic compounds.

What is the charge typically associated with group 6A nonmetals in binary ionic compounds?

Group 6A nonmetals typically form 2 negative ions in binary ionic compounds.

What is the charge typically associated with group 7A nonmetals in binary ionic compounds?

Group 7A nonmetals typically form 1 negative ion in binary ionic compounds.

Can hydrogen form both cations and anions? If so, what are they called?

Yes, hydrogen can form both a cation and an anion. As a cation, it is called a proton (H+), and as an anion, it is called a hydride (H-).

In the example of aluminum oxide, what is the name of the cation and the anion?

In aluminum oxide, the cation is aluminum, and the anion is oxide.

What is the correct name for the compound with the formula Mg3N2?

The correct name for the compound with the formula Mg3N2 is magnesium nitride.

What is the correct formula for the compound named calcium bromide?

The correct formula for the compound named calcium bromide is CaBr2.

How is the compound with the formula LiCl named, and why?

The compound with the formula LiCl is named lithium chloride. The cation 'lithium' is named first, followed by the anion 'chloride', which is derived from the element chlorine by adding 'ide' to its name.

What is the correct formula for the compound named potassium sulfide?

The correct formula for the compound named potassium sulfide is K2S.