1 / 10

Understanding Roman Numerals in Naming Ionic Compounds with Transition Metals

This guide focuses on naming ionic compounds that contain transition metals using Roman numerals to indicate their oxidation states. Transition metals can have multiple oxidation states, making it essential to specify their charge for clarity. For instance, in CuCl2, copper must have a +2 charge to balance the -1 charge of chlorine. We will discuss various examples, including the names and formulas for different compounds, and reinforce learning through practice questions, providing a comprehensive understanding of ionic compound nomenclature.

yan
Télécharger la présentation

Understanding Roman Numerals in Naming Ionic Compounds with Transition Metals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Naming ionic compounds: part II How to name compounds that contain transition metals

  2. Using Roman numerals to denote the charge of the transition metal FeO Fe2O3

  3. Why do we need a roman numeral? • Some metals can take MORE THAN ONE charge • The roman numeral always indicates the charge on the metal in that compound • The roman numeral does NOT tell you the number of metal atoms present in the compound.

  4. Let’s have another try at this… WS2 WS3

  5. You try some on your ownPause the video and answer these questions. When you have answered them, restart the video. What is the name of CuCl2 What is the name of PbS2

  6. You try some on your ownPause the video and answer these questions. When you have answered them, restart the video. What is the name of CuCl2 What is the name of PbS2 Here is what we initially know about the charges Cu? Cl-1 Here is what we initially know about the charges Pb? S-2 Since there are two Cl- ions, Cu needs to be in its Cu+2 oxidation state to balance out the negative. Since there are two S-2 ions, Pb needs to be in its Pb+4 oxidation state to balance out the negative. Copper (II) chloride Lead (IV) sulfide

  7. Turning the process around What is the formula for copper (I) phosphide? What is the formula for tin (II) fluoride?

  8. A side note: The mercury (I) cation What is different about the mercury (I) ion? What is the formula for mercury (I) iodide?

  9. You try some on your ownPause the video and answer these questions. When you have answered them, restart the video. What is the formula for iron (III) sulfide What is the formula for mercury (II) chloride?

  10. You try some on your ownPause the video and answer these questions. When you have answered them, restart the video. What is the formula for iron (III) sulfide What is the formula for mercury (II) chloride? Here is what we initially know about the charges Fe3+ S2- Here is what we initially know about the charges Hg2+ Cl- Since the LCM for a 3 & 2 is 6, we will need two Fe3+ ions and three S2- ions to balance out the charges You will need two Cl- ions to balance out the +2 charge on the mercury. Fe2S3 HgCl2

More Related