Common ions

• What should you find to deduce the charge of an ion?

  The number of electrons in the outer shell
• When deducing ion charge, what do atoms with fewer than four electrons tend to do?

  Donate electrons
• What type of ion do atoms that gain electrons become?

  Negative ions
• What type of ion do atoms that donate electrons become?

  Positive ion
• What must you learn in addition to single-element ions?

  The formula of compound ions
• What is the charge of ions formed by Group 1 metals?

  1+ (E.g. Na+)
• What is the charge of ions formed by Group 2 metals?

  2+ (E.g. Mg2+)
• What is the charge of ions formed by Group 3 metals?

  3+ (E.g. Al3+)
• What is the charge of a Silver ion?

  Ag+
• What is the charge of a Copper(II) ion?

  Cu2+
• What is the charge of an Iron(II) ion?

  Fe2+
• What is the charge of an Iron(III) ion?

  Fe3+
• What is the charge of a Lead(II) ion?

  Pb2+
• What is the charge of a Zinc(II) ion?

  Zn2+
• What is the charge of a Hydrogen ion?

  H+
• What is the formula of an Ammonium ion?

  NH4+
• What is the charge of ions formed by Group 5 non-metals?

  3- (E.g. N3-)
• What is the charge of ions formed by Group 6 non-metals?

  2- (E.g. O2-)
• What is the charge of ions formed by Group 7 non-metals?

  1- (E.g. Cl-)
• What is the formula of a Hydroxide ion?

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

  CO32-
• What is the formula of a Nitrate ion?

  NO3-
• What is the formula of a Sulfate ion?

  SO42-
• When deducing ion charge, what do atoms with more than four electrons tend to do?

  Receive electrons