Review%20Session%20Exam%203

Review%20Session%20Exam%203 - Review Session Exam 3...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Review Session Exam 3 Oxidation Numbers through Atomic Radii (plus anything needed from Exams 1 & 2)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Exam Topics Guidelines for assigning oxidation numbers. 1. The oxidation number of any free, uncombined element is zero. 2. The oxidation number of an element in a simple (monatomic) ion is the charge on the ion. 3. In the formula for any compound, the sum of the oxidation numbers of all elements in the compound is zero. 4. In a polyatomic ion, the sum of the oxidation numbers of the constituent elements is equal to the charge on the ion.
Background image of page 2
Exam Topics 1. Fluorine has an oxidation number of –1 in its compounds. 2. Hydrogen, H, has an oxidation number of +1 unless it is combined with metals, where it has the oxidation number -1. Examples – LiH, BaH 2 3. Oxygen usually has the oxidation number -2. Exceptions: In peroxides O has oxidation number of –1. Examples - H 2 O 2 , CaO 2 , Na 2 O 2 In OF 2 O has oxidation number of +2.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Exam Topics 1. Use the periodic table to help with assigning oxidation numbers of other elements. a. IA metals have oxidation numbers of +1. b. IIA metals have oxidation numbers of +2. c. IIIA metals have oxidation numbers of +3. There are a few rare exceptions. d. VA elements have oxidation numbers of –3 in binary compounds with H, metals or NH 4 + . e. VIA elements below O have oxidation numbers of – 2 in binary compounds with H, metals or NH 4 + .
Background image of page 4
Question 1 What is the oxidation number of phosphorus in Mg 2 P 2 O 3 ? 1. +5 2. +3 3. +1 4. 0 5. -1 6. -3 7. -5
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Exam Topics Binary compounds are made of two elements. metal + nonmetal = ionic compound nonmetal + nonmetal = covalent compound Name the more metallic element first. Use the element’s name. Name the less metallic element second. Add the suffix “ide” to the element’s stem.
Background image of page 6
Exam Topics Binary ionic compounds containing Binary ionic compounds containing metals that exhibit more than one metals that exhibit more than one oxidation state oxidation state Metals exhibiting multiple oxidation states are: 1.most of the transition metals 2.metals in groups IIIA (except Al), IVA, & VA
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Exam Topics There are two methods to name these compounds. 1.Older method add suffix “ic” to element’s Latin name for higher oxidation state add suffix “ous” to element’s Latin name for lower oxidation state 2.Modern method use Roman numerals in parentheses to indicate metal’s oxidation state
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Exam Topics Pseudobinary ionic compounds Pseudobinary ionic compounds There are three polyatomic ions that commonly form binary ionic compounds. 1.OH - hydroxide 2.CN - cyanide 3.NH 4 + ammonium
Background image of page 10
Exam Topics Binary Acids Binary Acids are binary compounds consisting of hydrogen and a nonmetal. Compounds are usually gases at room
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/02/2008 for the course CHEM 1212 taught by Professor Suggs during the Spring '08 term at University of Georgia Athens.

Page1 / 41

Review%20Session%20Exam%203 - Review Session Exam 3...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online