Redox

• The number of electrons an atom uses to bond with any other atom
• When an element has more than one stable oxidation number how is it indicated?
• • 1
• • 2
• +1
• What is the oxidation number of a simple ion?
• 0
• What is the oxidation number of hydrogen in metal hydrides such as LiH?
• What is the oxidation number of combined fluorine such as in NaF, CaF2?
• What is the oxidation number of an uncombined element such as C, H, O2?
• What is the oxidation number of combined oxygen such as in H2O?
• What is an oxidation number?
• What is the oxidation number of combined hydrogen such as in NH3, H2S?
• What is the oxidation number of combined hydrogen in metal hydrides such as LiH?
• What is the oxidation number of oxygen in peroxides?
• • 1
• Charge on the ion E.g Na+ → +1 ; Cl- → -1
• Written as a Roman numeral
• • 1
• Definition of oxidation in terms of electron transfer and oxidation number
• Indicating multiple stable oxidation numbers for an element

  Written as a Roman numeral
• Oxyanions are negative ions that have an element along with oxygen
• Redox reaction is a reaction in which both oxidation and reduction takes place
• Oxidation number of a metal is 0, because it is an uncombined element
• Oxidation number of Fe in iron (III) chloride is +3
• Definition of reduction in terms of electron transfer and oxidation number
• Oxidation number of S in SO4^2- is +6