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Assigning Oxidation Numbers
Assigning Oxidation Numbers
14
Chemistry
Undergraduate 1
10/03/2014

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Term
In a pure element the oxidation number is....
Definition
0
Term
The oxidation number of a monotomic ion is...
Definition

the same as its charge. Ex. Li+ = +1

  1. monatomic ion is an ion consisting of a single atom. If an ioncontains more than one atom, even if these atoms are of the same element, it is called a polyatomic ion. For example, calcium carbonate consists of the monatomic ion Ca2+ and the polyatomic ion CO32-.
Term
The sum of all oxidation numbers in a compound is...
Definition
0
Term
The sum of all oxidation numbers in an ion...
Definition

Equals the charge of that ion.

Ion an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Term
When bonded to other elements, the oxidation number of F is ...
Definition
-1
Term
In a binary salt involving a halogen, the oxidation number of the halogen is always...
Definition
-1
Term
The oxidation of an alkaline metal when bonded to other elements is ...
Definition
+1
Term
The oxidation numbers of all alkaline earth metal when bonded to other elements is...
Definition
+2
Term
When bonded to other elements the oxidation number of Al is ...
Definition
+3
Term
When bonded to other elements the oxidation number of Ag is...
Definition
+1
Term
When bonded to other elements the oxidation number of zinc and cadmium are each...
Definition
+2
Term
When bonded to other elements the oxidation number of Sc, Y and La are...
Definition
+3
Term
The oxidation number of O when bonded to other elements is almost always...
Definition

-2

exception is O22-. In peroxides the oxidation number of O is -1

Term
The oxidation number of H- when bonded with other elements is almost always ...
Definition

+1

Exception is when hydrogen is bonded directly to a metal (hydrides) 

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