The representative elements shown form positive ions with charges equal to their group numbers. Applying Concepts Are the ions anions or cations?
Note the positions of the nonmetals and the metalloid, arsenic. These elements form anions. Common transition elements that form more than one ion are also shown. Applying Concepts Do the transition metals form anions or cations?
The ions of these transition metals produce an array of colors when dissolved in water. From left to right, the ions are Co 3+ , Cr 3+ , Fe 3+ , Ni 2+ , and Mn 2+ .
Many transition metals form brightly colored compounds that are used in making artists’ paints.
These molecular models show the arrangement of atoms in four common polyatomic ions. Interpreting Diagrams How does the ammonium ion differ from the other three?
Hydrogen-containing polyatomic ions are part of many compounds that affect your daily life. a) Sodium hydrogen carbonate, which contains the HCO 3 - ion, can relieve an upset stomach. b) The presence of dissolved HCO 3 - , HPO 4 2- , and H 2 PO 4 - ions in your blood is critical for your health. c) Crop dusters spread fertilizers containing HPO 4 2- and H 2 PO 4 - ions.
Hydrogen-containing polyatomic ions are part of many compounds that affect your daily life. a) Sodium hydrogen carbonate, which contains the HCO 3 - ion, can relieve an upset stomach. b) The presence of dissolved HCO 3 - , HPO 4 2- , and H 2 PO 4 - ions in your blood is critical for your health. c) Crop dusters spread fertilizers containing HPO 4 2- and H 2 PO 4 - ions.
Hydrogen-containing polyatomic ions are part of many compounds that affect your daily life. a) Sodium hydrogen carbonate, which contains the HCO 3 - ion, can relieve an upset stomach. b) The presence of dissolved HCO 3 - , HPO 4 2- , and H 2 PO 4 - ions in your blood is critical for your health. c) Crop dusters spread fertilizers containing HPO 4 2- and H 2 PO 4 - ions.
Tin(II) fluoride and tin(IV) sulfide have different compositions and uses. a) Tin(II) fluoride is added to toothpastes to prevent cavities. b) Tin(IV) sulfide is used in glazes for porcelain fixtures and dishes. Inferring What are the charges on the tin ions in the two compounds?
Tin(II) fluoride and tin(IV) sulfide have different compositions and uses. a) Tin(II) fluoride is added to toothpastes to prevent cavities. b) Tin(IV) sulfide is used in glazes for porcelain fixtures and dishes. Inferring What are the charges on the tin ions in the two compounds?
In the process for making steel, iron is extracted from hematite, an ore containing iron(III) oxide. Applying Concepts What is the formula for iron(III) oxide?
Some examples of ionic compounds containing polyatomic ions are shown. a) Oysters produce calcium carbonate to form their shells and sometimes pearls. b) Lead(II) sulfate is an important component of an automobile battery. c) Compounds such as ammonium sulfate or ammonium phosphate are common fertilizers.
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