List the Tables:

The tables listed below list typical polyatomic ions that you will be usingthroughout this General-sirhenryjones-museums.org laboratory collection (Chem 151-152). These ions areseparated by charge on the ion into four (4) various tables and provided alphabeticallywithin each table. For each polyatomic ion, the name, chemical formula, two-dimensionaldrawing, and three-dimensional representation are given.

The three-dimensional frameworks are drawn as CPK models. CPK structuresrepresent the atoms together spheres, where the radius of the ball is equal to the van derWaals radius of the atom; these structures offer an almost right volume that the polyatomicion. In these tables, the three-dimensional structures have all been drawn to the samescale; as such you have the right to compare their loved one sizes. In addition, the atoms in the CPKstructures have actually been color-coded to complement the two-dimensional illustrations for easiercomparison.

To see the ions interactively, please usage RASMOL,a computer application which is accessible for both Macs and PCs and can be download atthe RASMOL site. To download the pdb papers (refers come the protein databank technique ofsaving atomic works with for a molecule) because that viewing and rotating the ions noted in thetables below, please click the ideal three-dimensional structure.


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(Note: If youwant to watch multiple compound simultaneously, you re welcome download every pdb file and save onyour computer. Then open RASMOL exterior of Netscape.) NOTE: CPK sizes because that metalatoms Cr and also Mn will be incorrect in RASMOL.

Table 1: Cations (+1 Charge)

Ion

Two-Dimensional Structure

Three-Dimensional Representation

Ammonium NH4+

*
*
Hydronium H3O+
*
*

Table 2: Anions (-1 Charge)

Ion

Two-Dimensional Structure

Three-Dimensional Representation

Bicarbonate HCO3-

*
*
Cyanide CN-
*
*
Hydrogen Sulfate HSO4-
*
*
Hydroxide OH-
*
*
Nitrate NO3-
*
*
Nitrite NO2-
*
*
Perchlorate ClO4-
*
*
Permanganate MnO4-
*
*

Table 3: Anions (-2 Charge)

Ion

Two-Dimensional Structure

Three-Dimensional Representation

Carbonate CO32-

*
*
Chromate CrO42-
*
*
Dichromate Cr2O72-
*
*
Hydrogen Phosphate HPO42-
*
*
Sulfate SO42-
*
*
Sulfite SO32-
*
*
Thiosulfate S2O32-
*
*

Table 4: Anions (-3 Charge)

Ion

Two-Dimensional Structure

Three-Dimensional Representation

Phosphate PO43-

*
*

*

*