This is a
redox reaction where oxidation and a reduction occur.
Here, Mg goes to Mg²⁺ by changing
its oxidation
number from 0 to +2 while S goes
to S²⁻ by reducing its oxidation
state from 0 to -2 .
Hence Mg is
oxidized by S in the
reaction.
Reducing agent is a substance which reduces other
substance by oxidizing itself. Hence, the reducing
agent of this reaction
is Magnesium.
