redox Flashcards
what is meant by the term oxidation
the loss of electrons
what is meant by the term reduction
the gain of electrons
what is an oxidation number
a number that gives the oxidation state of an element or ionic substance.
what is the oxidation number of an element
0
what is the overall oxidation number of a neutral compound
0
what do the oxidation numbers in a charged compound add up to
the total charge
what is hydrogens oxidation number
+1
what is oxygens oxidation number
-2
what is the oxidation number of all halogens
-1
what is the oxidation number of all group 1 metals
+1
what is the oxidation number of all group 2 metals
+2
what is oxygens oxidation number in a peroxide
-1
what is hydrogen’s oxidation number in a metal hydride
-1
what does a roman numeral after an element show
the elements oxidation number
where are electrons held
in orbitals
what are elements in the periodic table arranged by
proton number and orbital
what is an oxidising agent
an element that is reduced. an increase in oxidation number
what is a reducing agent
an element that is oxidises. a decrease in oxidation number
what is a redox reaction
a reaction where oxidation and reduction occurs simultaneously
what is a disproportionation reaction
a reaction where the same species if both oxidised and reduces
what is a half equation used for
to show the separate oxidation and reduction reaction that occur
