Chemistry Anions and Diatomic Elements

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Questions and Answers

Match the following anions with their corresponding formulas:

Nitrate = NO3- Hydroxide = OH- Bicarbonate = HCO3- Sulfate = SO42-

Match the following diatomic elements with their molecular formulas:

Nitrogen = N2 Fluorine = F2 Chlorine = Cl2 Oxygen = O2

Match the following polyatomic ions with their common names:

Perchlorate = ClO4- Cyanide = CN- Thiosulfate = S2O32- Oxalate = C2O42-

Match the following halogens with their formulas:

<p>Iodine = I2 Bromine = Br2 Chlorine = Cl2 Fluorine = F2</p> Signup and view all the answers

Match the following oxyanions with their formulas:

<p>Chlorite = ClO2- Permanganate = MnO4- Arsenate = AsO43- Hydrogen Phosphate = HPO42-</p> Signup and view all the answers

Flashcards

Nitrate (NO3-)

A negatively charged ion consisting of one nitrogen atom and two oxygen atoms.

Nitrite (NO2-)

A negatively charged ion consisting of one nitrogen atom and one oxygen atom.

Ammonium (NH4+)

A positively charged ion containing four hydrogen atoms and one nitrogen atom.

Cyanide (CN-)

A negatively charged ion containing one carbon atom and one oxygen atom, with a single negative charge.

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Hypochlorite (ClO-)

A negatively charged ion consisting of one chlorine atom and one oxygen atom.

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Study Notes

Anions

  • Ammonium: NH₄⁺
  • Nitrite: NO₂⁻
  • Nitrate: NO₃⁻
  • Hydroxide: OH⁻
  • Cyanide: CN⁻
  • Permanganate: MnO₄⁻
  • Hydrogen Carbonate/Bicarbonate: HCO₃⁻
  • Hypochlorite: ClO⁻
  • Chlorite: ClO₂⁻
  • Chlorate: ClO₃⁻
  • Perchlorate: ClO₄⁻
  • Bromate: BrO₃⁻
  • Iodate: IO₃⁻
  • Periodate: IO₄⁻
  • Acetate: C₂H₃O₂⁻
  • Dihydrogen Phosphate: H₂PO₄⁻
  • Carbonate: CO₃²⁻
  • Sulfite: SO₃²⁻
  • Sulfate: SO₄²⁻
  • Thiosulfate: S₂O₃²⁻
  • Peroxide: O₂²⁻
  • Chromate: CrO₄²⁻
  • Dichromate: Cr₂O₇²⁻
  • Hydrogen Phosphate: HPO₄²⁻
  • Phosphate: PO₄³⁻
  • Arsenate: AsO₄³⁻
  • Hydrogen Sulfate/Bisulfate: HSO₄⁻
  • Oxalate: C₂O₄²⁻
  • Citrate: C₆H₅O₇³⁻

Diatomic Elements

  • Oxygen: O₂ (diatomic in its natural state)
  • Nitrogen: N₂ (diatomic in its natural state)
  • Hydrogen: H₂ (diatomic in its natural state)
  • Fluorine: F₂
  • Chlorine: Cl₂
  • Bromine: Br₂
  • Iodine: I₂

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