A) \[V{{O}^{+}}_{2}\to {{V}_{2}}{{O}_{3}}\]
B) \[Na\to N{{a}^{+}}\]
C) \[Cr{{O}^{2-}}_{4}\]\[\to C{{r}_{2}}{{O}_{7}}^{2-}\]
D) \[Z{{n}^{2+}}\to Zn\]
Correct Answer: C
Solution :
[c]| \[\overset{*}{\mathop{C}}\,r{{O}_{4}}^{2-}\] | \[\overset{*}{\mathop{C}}\,{{r}_{2}}{{O}_{7}}^{2-}\] |
| \[x+[(-2)\times 4]=-2\] | \[2x+(-2)\times 7=-2\] |
| \[x=8-2=+6\] | \[2x=14-2=12\] |
| \[x=\frac{12}{2}=+6\] |
You need to login to perform this action.
You will be redirected in
3 sec
