OXIDATION STATES

• OXIDATION STATE OF UNCOMBINED ELEMENTS?

  0 (e.g. Cl2, Fe, O2)
• OXIDATION STATE OF IONS?

  same as charge on ion
• OXIDATION STATE OF GROUP 1?

  +1
• OXIDATION STATE OF GROUP 2?

  +2
• OXIDATION STATE OF ALUMINIUM?

  +3
• OXIDATION STATE OF HYDROGEN?

  +1

  -> except in hydrides (-1)
• OXIDATION STATE OF CHLORINE?

  -1

  -> except if in a compound with F and O, then it would be positive
• OXIDATION STATE OF FLUORINE?

  -1
• OXIDATION STATE OF OXYGEN?

  -2

  -> except in peroxides and OF2 where it is -1