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Mark Yourself Question

 Determine the oxidation number of each element in each of the following compounds:

a. H2CO3

b. N2(g)

c. Zn(OH)42- 

d. NO2- 

e. LiH 

f . Cr2S3

I have answered this question

Which is the balanced redox equation for the reaction below:

MnO4−+I−→Mn2++I2MnO_4^-+I^-\rightarrow Mn^{2+}+I_2MnO4−​+I−→Mn2++I2​

MnO4−+2I−+8H+→Mn2++I2+4H2OMnO_4^-+2I^-+8H^+\rightarrow Mn^{2+}+I_2+4H_2OMnO4−​+2I−+8H+→Mn2++I2​+4H2​O

MnO4−+2I−+8H++5e−→Mn2++I2+4H2O+2e−MnO_4^-+2I^-+8H^++5e^-\rightarrow Mn^{2+}+I_2+4H_2O+2e^-MnO4−​+2I−+8H++5e−→Mn2++I2​+4H2​O+2e−

MnO4−+2I−→Mn2++I2+2O2MnO_4^-+2I^-\rightarrow Mn^{2+}+I_2+2O_2MnO4−​+2I−→Mn2++I2​+2O2​

2MnO4−+10I−+16H+→→2Mn2++5I2+8H2O2MnO_4^-+10I^-+16H^+\rightarrow\rightarrow2Mn^{2+}+5I_2+8H_2O2MnO4−​+10I−+16H+→→2Mn2++5I2​+8H2​O

None of the above

I don't know