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Section 4.1: Naming Binary Compounds

Section 4.1: Naming Binary Compounds. Period 6 Group #5. HOW DO YOU NAME THE COMPOUND PCL 5 ?. Naming Compounds That Contain a Metal and a Nonmetal. Metals lose electrons to form cations, nonmetals gain electrons to form anions

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Section 4.1: Naming Binary Compounds

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  1. Section 4.1: Naming Binary Compounds Period 6 Group #5

  2. HOW DO YOU NAME THE COMPOUND PCL5?

  3. Naming Compounds That Contain a Metal and a Nonmetal • Metals lose electrons to form cations, nonmetals gain electrons to form anions • A binary ionic compounds contains a cation, written first, then an anion • Two types of binary compounds: • Type I: the metal present forms only one type of cation • Type II: the metal present forms two or more cations with different charges

  4. What is written first in a binary ionic compound, the cation or the anion? Cation

  5. COMPOUND CHART

  6. Type 1 Binary Ionic compound • The cation is named first. • Simple cations get their names for elements. • Simple anion’s name has the element’s name with –ide at the end. • You can write the name of the compound by combining the name of the ions.

  7. TYPE I COMPOUND

  8. How do you name CaO? -Calcium Oxide

  9. Type II binary Ionic Compounds • Metal present can form two (or more) cation with different charges • Most metals can form more than one type of cation       ex:) Cr ->  Cr2+ or Cr3+ • Uses Roman numerals to specify the charge on the cation • -Transition metals are almost always Type II

  10. Common Type II Cations

  11. Which charge does Iron(II) Chloride refer to? 2+ for Iron.

  12. What is the Roman numeral for? -The Roman numerals are used to specify the charge on the cation.

  13. Naming Binary Compounds That Contain Only Nonmetals (Type III) • First element in the formula is named first, using the full element name • The second element is named like an anion • Prefixes are used to denote the # of atoms present • The prefix mono- is never used for naming the first element • Drop the final o or a of the prefix when second element is oxygen • Ex: O1 monooxide  monoxide

  14. How do you name ICl3? -Iodine trichloride

  15. Common Names • -Some compounds referred to common names • Ex: water (H2O), Ammonia (NH3) • These names cannot be name in any way. • They can only be memorized.

  16. Common Anion Chart

  17. Quiz 1. What is the suffix of the ion with the lower charge in the older system of naming? 2. Knowing that N2O5 does not have a common name, how would you name it using the Type III system? 3. What do we call a compound that contains a cation and an anion? 4. What type of metal is specific to Type II system? 5. What is the difference between Type I and Type II compounds?

  18. Answers • The suffix is –ous. • Dinitrogen pentoxide • Binary ionic compound • Transition Metals • The metals in Type I has one charge while the metals in Type II can have two more charges.

  19. References • http://images.absoluteastronomy.com/images/topicimages/i/ir/iron%28iii%29_chloride.gif • http://www.iun.edu/~cpanhd/C101webnotes/composition/images/ionform2.jpg • http://www.miracosta.edu/home/dlr/naming.htm • http://www.chemguide.co.uk/atoms/bonding/pcl5.GIF •  http://images.asia.ru/img/alibaba/photo/50243277/Calcium_Oxide.jpg • http://www.chem.ufl.edu/~itl/2045_s99/matter/TB02_005.GIF

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