TATA NAMA SENYAWA BINER (SENYAWA ION)

Summary

This video explains the naming conventions for binary ionic compounds, focusing on the differences between elements in the main groups and transition metals. The speaker demonstrates how to determine the correct names by considering the oxidation states of metals, using examples like Al2O3, Fe2O3, SnCl4, and others. The rules for naming include adding ‘-ide’ to the non-metal and, for transition metals, including the oxidation number in Roman numerals. The video also emphasizes the importance of understanding oxidation states to correctly identify compound names. The content is educational for chemistry learners, especially in naming ionic compounds.

Takeaways

• 😀 Binary ionic compounds consist of two elements: a metal and a non-metal.
• 😀 The naming of binary ionic compounds depends on whether the metal is from Group A (main group) or Group B (transition metals).
• 😀 For Group A metals, the metal name is followed by the non-metal name with an 'ide' suffix (e.g., aluminum oxide, sodium chloride).
• 😀 For Group B metals, the oxidation state of the metal must be indicated in Roman numerals in parentheses (e.g., iron (III) oxide, tin (IV) chloride).
• 😀 Non-metal elements are always named with the '-ide' suffix (e.g., oxide, sulfide, chloride, bromide).
• 😀 To determine the correct name for compounds with Group B metals, the oxidation state must be calculated (e.g., iron (III) oxide from Fe2O3).
• 😀 The oxidation state of a metal in a compound can be found by balancing the charges of the ions (e.g., for Fe2O3, Fe has a +3 charge).
• 😀 The suffix 'ide' is added to the non-metal name to indicate it is part of a binary ionic compound (e.g., chloride for chlorine).
• 😀 It is important to memorize the oxidation states of common Group A elements to simplify naming.
• 😀 For compounds like silver sulfide (Ag2S), the oxidation state of silver is found by balancing the charges, leading to silver (I) sulfide.

Q & A

What is a binary compound?

A binary compound is a chemical compound that consists of two different elements, typically one metal and one non-metal.

How do you name ionic binary compounds with metals from Group A or the main groups?

For metals from Group A (main groups), the name is simply the metal followed by the non-metal with its name modified to end in 'ide.'

How is the naming different for ionic binary compounds with transition metals (Group B)?

For transition metals (Group B), you need to specify the oxidation state (or valence) of the metal using Roman numerals in parentheses after the metal's name.

What is an example of a binary ionic compound involving a transition metal?

An example is Fe2O3, which is named iron(III) oxide, where 'III' indicates the oxidation state of iron.

How do you determine the oxidation state of a transition metal in a binary compound?

The oxidation state of a transition metal is determined by balancing the charges in the compound. For example, in Fe2O3, the oxidation state of iron is +3 to balance the charge of the oxide ions.

What does the suffix 'ide' indicate in naming ionic compounds?

The suffix 'ide' is used to indicate the non-metal in the compound has formed an anion, such as chloride (Cl-) or oxide (O2-).

Why is the name 'ferrum oxide' incorrect for Fe2O3?

The name 'ferrum oxide' is incorrect because it does not specify the oxidation state of iron. The correct name is 'iron(III) oxide,' with the Roman numeral indicating iron’s oxidation state.

What is the correct name for the compound SnCl4?

The correct name for SnCl4 is tin(IV) chloride, as tin is a transition metal and its oxidation state must be specified as +4.

What is the proper name for the compound NaBr?

The proper name for NaBr is sodium bromide, as sodium is in Group 1A and does not require an oxidation state to be specified.

How do you name a compound like Ag2S?

Ag2S is named silver(I) sulfide, because silver (Ag) has a +1 oxidation state, which is indicated by the Roman numeral I.