WK03

• What is the formula of a chloride ion?

  Cl−
• What is the formula of an oxide ion?

   O2–
• What is the formula of a sulfate (VI) ion?

  SO42 -
• What is the formula of a hydroxide ion?

  OH-
• What is the formula of a calcium ion?

  Ca2+
• What is the formula of a magnesium ion?

  Mg2+
• What is the formula of a silver (I) ion?

  Ag+
• What is the formula of nitrate (V) ion?

  NO32−
• What is the formula of a carbonate ion?

  CO₃²⁻
• What is the formula of sodium iodide?

  NaI
• What is the formula of magnesium phosphate (V)?

  Mg3PO4
• What is the formula of calcium hydroxide?

  Ca(OH)2
• What is the formula of potassium carbonate?

   K2CO3
• What is the formula of aluminum oxide?

  Al 2O 3
• What is the formula of ammonium?


  NH₄⁺
• What is the formula of sulfide ion?

  S2-