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Questions and Answers
What is the oxidation state of Barium?
What is the oxidation state of Barium?
Which of the following elements has a +5 oxidation state?
Which of the following elements has a +5 oxidation state?
Which of the following correctly represents Lead in its +2 oxidation state?
Which of the following correctly represents Lead in its +2 oxidation state?
What is the oxidation state of Cadmium?
What is the oxidation state of Cadmium?
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What is the charge of the Chlorate ion?
What is the charge of the Chlorate ion?
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Identify the element with the oxidation state of +4.
Identify the element with the oxidation state of +4.
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Which of the following ions has a -3 charge?
Which of the following ions has a -3 charge?
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Which of the following is the formula for the Acetate ion?
Which of the following is the formula for the Acetate ion?
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Which of the following represents Mercury in its +1 oxidation state?
Which of the following represents Mercury in its +1 oxidation state?
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What is the charge of the Dichromate ion?
What is the charge of the Dichromate ion?
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What is the charge of the Iodate ion?
What is the charge of the Iodate ion?
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Which of the following ions is a positive ion?
Which of the following ions is a positive ion?
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Which element has an oxidation state of +4 and is known as manganic?
Which element has an oxidation state of +4 and is known as manganic?
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What is the formula for the Hydrogen sulfate ion?
What is the formula for the Hydrogen sulfate ion?
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Which of the following ions has the formula SO4 2-?
Which of the following ions has the formula SO4 2-?
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What is the oxidation state of Chromium when denoted as Cr 2+?
What is the oxidation state of Chromium when denoted as Cr 2+?
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Which ion has a formula denoting a negative charge of 3?
Which ion has a formula denoting a negative charge of 3?
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What is the common name of the ion represented by MnO4 1-?
What is the common name of the ion represented by MnO4 1-?
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Which formula represents the Hypochlorite ion?
Which formula represents the Hypochlorite ion?
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Which of the following elements has a charge of -2?
Which of the following elements has a charge of -2?
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What is the charge of the Nitrite Ion?
What is the charge of the Nitrite Ion?
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Which of the following represents a trivalent positive ion?
Which of the following represents a trivalent positive ion?
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Which of these ions is represented by the formula CrO4 2-?
Which of these ions is represented by the formula CrO4 2-?
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What is the charge of the Thiocyanate ion?
What is the charge of the Thiocyanate ion?
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What is the formula for the Fluorite ion?
What is the formula for the Fluorite ion?
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Which ion is known as Hypoiodite?
Which ion is known as Hypoiodite?
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Which of the following has a formula indicating a negative charge of 2?
Which of the following has a formula indicating a negative charge of 2?
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Which of the following is the correct formula for the Bicarbonate ion?
Which of the following is the correct formula for the Bicarbonate ion?
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Which of these is a common monatomic negative ion?
Which of these is a common monatomic negative ion?
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What is the charge and type of the ion represented as NO2 1-?
What is the charge and type of the ion represented as NO2 1-?
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Study Notes
Common Polyatomic Ions
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1- charge: Acetate (C₂H₃O₂⁻), Bromate (BrO₃⁻), Bromite (BrO₂⁻), Hypobromite (BrO⁻), Perbromate (BrO₄⁻), Chlorate (ClO₃⁻), Chlorite (ClO₂⁻), Hypochlorite (ClO⁻), Perchlorate (ClO₄⁻), Cyanide (CN⁻), Dihydrogen phosphate (H₂PO₄⁻), Hydrogen carbonate (bicarbonate) (HCO₃⁻), Fluoride (F⁻), Fluorite (FO₂⁻), Hypofluorite (FO⁻), Fluorate (FO₃⁻), Perfluorate (FO₄⁻), Hydrogen sulfate (bisulfate) (HSO₄⁻), Hydrogen sulfite (bisulfite) (HSO₃⁻), Hydroxide (OH⁻), Iodate (IO₃⁻), Iodite (IO₂⁻), Hypoiodite (IO⁻), Periodate (IO₄⁻), Nitrate (NO₃⁻), Nitrite (NO₂⁻), Hyponitrite (NO⁻), Pernitrate (NO₄⁻), Permanganate (MnO₄⁻), Thiocynate (SCN⁻), Cyanide (CN⁻), Hydrogen phosphate (biphosphate) (HPO₄²⁻), Percarbonate (CO₄²⁻),, Hypocarbonite (CO₂²⁻), Carbonate (CO₃²⁻).
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2- charge: Hypocarbonite (CO₂²⁻), Carbonate (CO₃²⁻), Percarbonate (CO₄²⁻), Dichromate (Cr₂O₇²⁻), Hydrogen phosphate (biphosphate) (HPO₄²⁻), Manganate (MnO₄²⁻), Oxalate (C₂O₄²⁻), Sulfate (SO₄²⁻), Sulfite (SO₃²⁻), Hyposulfite (SO₂²⁻), Persulfate (SO₅²⁻), Tartrate (C₄H₄O₆²⁻), Thiosulfate (S₂O₃²⁻), Silicate (SiO₃²⁻), Tetraborate (B₄O₇²⁻).
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3- charge: Borate (BO₃³⁻), Phosphite (PO₃³⁻), Phosphate (PO₄³⁻).
Common Monatomic Cations
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1+ charge: Cesium (Cs⁺), Copper(I) (cuprous) (Cu⁺), Gold(I) (Au⁺), Hydrogen (H⁺), Lithium (Li⁺), Potassium (K⁺), Rubidium (Rb⁺), Silver (Ag⁺), Sodium (Na⁺).
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2+ charge: Barium (Ba²⁺), Beryllium (Be²⁺), Cadmium (Cd²⁺), Calcium (Ca²⁺), Chromium (II) (chromous) (Cr²⁺), Cobalt (II) (cobaltous) (Co²⁺), Copper (II) (cupric) (Cu²⁺), Iron (II) (ferrous) (Fe²⁺), Lead (II) (plumbous) (Pb²⁺), Magnesium (Mg²⁺), Manganese (II) (manganous) (Mn²⁺), Mercury (I) (mercurous) (Hg₂²⁺), Mercury (II) (mercuric) (Hg²⁺), Nickel (II) (Ni²⁺), Strontium (Sr²⁺), Tin (II) (stannous) (Sn²⁺), Zinc (Zn²⁺).
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3+ charge: Aluminum (Al³⁺), Chromium (III) (chromic) (Cr³⁺), Cobalt (III) (cobaltic) (Co³⁺), Gallium (Ga³⁺), Gold (III) (Au³⁺), Iron (III) (ferric) (Fe³⁺), Manganese (III) (manganic) (Mn³⁺), Nickel (III) (Ni³⁺), Titanium (III) (titanous) (Ti³⁺).
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4+ charge: Lead (IV) (plumbic) (Pb⁴⁺), Tin (IV) (stannic) (Sn⁴⁺), Titanium (IV) (titanic) (Ti⁴⁺).
Common Monatomic Anions
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1- charge: Bromide (Br⁻), Chloride (Cl⁻), Fluoride (F⁻), Hydride (H⁻), Iodide (I⁻).
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2- charge: Oxide (O²⁻), Peroxide (O₂²⁻), Sulfide (S²⁻).
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3- charge: Azide (N₃⁻), Nitride (N³⁻), Phosphide (P³⁻).
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4- charge: Carbide (C⁴⁻).
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Description
Test your knowledge of common polyatomic ions including their formulas and charges. This quiz covers ions with both 1- and 2- charges, providing a comprehensive overview. Perfect for chemistry students wanting to sharpen their understanding of polyatomic structures.
