The oxidation number of an element is the \"charge\" the element would have if a
ID: 951135 • Letter: T
Question
The oxidation number of an element is the "charge" the element would have if all of its bonds were completely ionic; that is, if the electron pairs of each bond were transferred to the more electronegative atom.
For monatomic ions the oxidation number is simply the charge of the ion. For covalently bonded elements the oxidation number is a bookkeeping device and does not mean that the element carries an actual charge.
Determine the oxidation state for each of the elements below.
The oxidation state of
chromium
in
dichromate ion
Cr2O72-
is
.
The oxidation state of
chlorine
in
hypochlorous acid
HClO
is
.
The oxidation state of
iodine
in
iodic acid
HIO3
is
.
The oxidation state of
...chromium
...in
...dichromate ion
Cr2O72-
is
....
The oxidation state of
chlorine
in
hypochlorous acid
HClO
is
.
The oxidation state of
iodine
in
iodic acid
HIO3
is
.
Explanation / Answer
The oxidation state of
chromium
in
dichromate ion
Cr2O72-
is
+6
The oxidation state of
chlorine
in
hypochlorous acid
HClO
is
.+1
The oxidation state of
iodine
in
iodic acid
HIO3
is
.+5
The oxidation state of
...chromium
...in
...dichromate ion
Cr2O72-
is
...+6
The oxidation state of
chlorine
in
hypochlorous acid
HClO
is
.+1
The oxidation state of
iodine
in
iodic acid
HIO3
is
.+5
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