Cotton Linen Pillow Case

Aluminum oxidation number

It is often useful to follow chemical reactions by looking at changes in the oxidation numbers of the atoms in each compound during the reaction. Oxidation numbers also play an important role in the systematic nomenclature of chemical compounds. By definition, the oxidation number of an atom is the charge that atom would have if the compound was composed of ions.

1. The oxidation number of an atom is zero in a neutral substance that contains atoms of only one element. Thus, the atoms in O2, O3, P4, S8, and aluminum metal all have an oxidation number of 0.

2. The oxidation number of simple ions is equal to the charge on the ion. The oxidation number of sodium in the Na+ ion is +1, for example, and the oxidation number of chlorine in the Cl- ion is -1.

3. The oxidation number of hydrogen is +1 when it is combined with a nonmetal as in CH4, NH3, H2O, and HCl.

4. The oxidation number of hydrogen is -1 when it is combined with a metal as in. LiH, NaH, CaH2, and LiAlH4.

5. The metals in Group IA form compounds (such as Li3N and Na2S) in which the metal atom has an oxidation number of +1.

6. The elements in Group IIA form compounds (such as Mg3N2 and CaCO3) in which the metal atom has a +2 oxidation number.

7. Oxygen usually has an oxidation number of -2. Exceptions include molecules and polyatomic ions that contain O-O bonds, such as O2, O3, H2O2, and the O22- ion.

8. The elements in Group VIIA often form compounds (such as AlF3, HCl, and ZnBr2) in which the nonmetal has a -1 oxidation number.

9. The sum of the oxidation numbers in a neutral compound is zero.

H2O: 2(+1) + (-2) = 0

10. The sum of the oxidation numbers in a polyatomic ion is equal to the charge on the ion. The oxidation number of the sulfur atom in the SO42- ion must be +6, for example, because the sum of the oxidation numbers of the atoms in this ion must equal -2.

SO42-: (+6) + 4(-2) = -2

11. Elements toward the bottom left corner of the periodic table are more likely to have positive oxidation numbers than those toward the upper right corner of the table. Sulfur has a positive oxidation number in SO2, for example, because it is below oxygen in the periodic table.

Read electro-mechanical engineering blog
You might also like
Mico_Plasma Oxidation of Alumina coating on aluminum
Mico_Plasma Oxidation of Alumina coating on aluminum ...
plasma electrolytic oxidation of aluminum.3gp
plasma electrolytic oxidation of aluminum.3gp
Advanage Cleans Chrome & Aluminum oxidation
Advanage Cleans Chrome & Aluminum oxidation
A New Unifying Biparametric Nomenclature that Spans all of Chemistry: The science of incorporating daily over 2,000 new names to a base of over 42 million compounds while still maintaining order
Book (Elsevier Science)
3M 3M 39529 Mag and Aluminum Polish - 10 oz.
Automotive Parts and Accessories (3M)
  • Sale Unit: EACH
  • Brand: 3M
  • 3M Number: 39529
  • Industry: Automotive
  • Product Type: Polish
Kbrotech EDC Outdoor Aluminum Key Holder Folder KeyChain Clip Pocket Flexible Tool (BLACK)
Office Product (Kbrotech)
  • We ship all items via e-packet with tracking numbers, Usually can be delivered within 7-15 DAYS!
  • The screws can unscrewed by coin.
  • Prevents your keys from making a noise, being missing, being broken, being scratched.
  • Clip your keys or other things tightly and in order with the buffer rings.
  • Protects you from being hurt by keys. Stainless steel screw nails
VWTECH VWTECH Samsung Galaxy S6 Case Tank Aluminum and Polymer Tempered Glass Shockproof Heavy Duty Hard Protection Cover Case with Safety Rope Gold
Wireless (VWTECH)
  • Three anodic oxidation coloring process, softness and hardness further optimization of color stability. used for a long time does not fade excellent cushion compression...
  • Camera Protection: The shell with heightened design, protective shell height above s6 prominent camera, can to avoid the camera when the table caused by the grinding
  • Convenient to operate your phone with the visual skylight and answering phone open hole
  • Holster the adsorption type design, so you can switch in the most convenient way as long as put it on
  • Precise cut openings for all buttons, ports and speakers,needn t to remove the case when operating your phone
Accent Printing & Signs Aluminum A-Frame w/2 Track Panels & Letter Number Set Sidewalk Sign- 24"X36"
Office Product (Accent Printing & Signs)
  • PORTABLE A-FRAME SIDEWALK SIGNBOARD
  • 24 x 36 and folds down to a slim 3 thick for easy storage.
  • Anodized Aluminum Resists Oxidation and is UV Treated. Very Weather Resistant.
  • Comes With Two Letter Track Panel Inserts!
  • Full Set of 230 4 Red Numbers and Black Letters!
Related Posts