Q.
The number of species from the following having $+2$ oxidation state of metal ion is________.
$FeO , Fe _{2} O _{3}, CuI , CuO , SnCl _{2}, SnCl _{4}, Hg _{2} Cl _{2}, HgCl _{2}$
Redox Reactions
Solution:
Compound
Oxidation state of metal ion.
$FeO$
$+2$
$Fe _{2} O _{3}$
$+3$
$CuI$
$+1$
$CuO$
$+2$
$SnCl_2$
$+2$
$SnCl_4$
$+4$
$Hg_2Cl_2$
$+1$
$HgCl_2$
$+2$
| Compound | Oxidation state of metal ion. |
|---|---|
| $FeO$ | $+2$ |
| $Fe _{2} O _{3}$ | $+3$ |
| $CuI$ | $+1$ |
| $CuO$ | $+2$ |
| $SnCl_2$ | $+2$ |
| $SnCl_4$ | $+4$ |
| $Hg_2Cl_2$ | $+1$ |
| $HgCl_2$ | $+2$ |