List that Tables:

The tables below list common polyatomic ions that you will be usingthroughout this General-lifwynnfoundation.org laboratory series (Chem 151-152). These ion areseparated by fee on the ion into 4 (4) different tables and detailed alphabeticallywithin every table. Because that each polyatomic ion, the name, chemical formula, two-dimensionaldrawing, and three-dimensional depiction are given.

The three-dimensional structures are drawn as CPK models. CPK structuresrepresent the atoms together spheres, where the radius the the round is equal to the van derWaals radius the the atom; this structures offer an almost right volume the the polyatomicion. In this tables, the three-dimensional structures have actually all been drawn to the samescale; because of this you can compare their relative sizes. In addition, the atom in the CPKstructures have actually been color-coded to enhance the two-dimensional drawings for easiercomparison.

To watch the ions interactively, please usage RASMOL,a computer application i m sorry is available for both Macs and also PCs and can be downloaded atthe RASMOL site. Come download the pdb files (refers come the protein databank method ofsaving atomic coordinates for a molecule) for viewing and rotating the ions noted in thetables below, please click on the appropriate three-dimensional structure.


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(Note: If youwant to see multiple compounds simultaneously, please download each pdb document and save onyour computer. Then open up RASMOL external of Netscape.) NOTE: CPK sizes because that metalatoms Cr and also Mn will certainly be not correct 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-

*
*

*

*