What are the oxidizing agent and the reducing agent in this chemical equation? 3fes + 8hno3 → 3feso4 + 8no + 4h2o

The oxidizing agent is one which itself gets reduced and oxidizes other

Reduction : in this process the element accepts electron and gets reduced

Reducing agent is one which itself gets oxidized and reduces other

Oxidation : in this process the element loses electron and gets oxidized

Here the oxidation number of Sulphur change  from -2 (FeS) to +6 (FeSO4) so it is oxidized and thus it is the reducing agent

The oxidation number of nitrogen changes from +5 (HNO3) to +2 (NO) thus it is reduced and thus it is the oxidizing agent

The reducing agent is FeS and the oxidizing agent is

Explanation:

Oxidizing agent is defined as the agent which oxidizes the other substance and itself gets reduced. It undergoes reduction reaction which means it gains electrons and the oxidation state of the substance gets reduced.

Reducing agent is defined as the agent which reduces the other substance and itself gets oxidized. It undergoes oxidation reaction which means it looses electrons and the oxidation state of the substance is increased.

For the given chemical equation:

On reactant side:

Oxidation state of Iron = +2

Oxidation state of Sulfur = -2

Oxidation state of oxygen = -2

Oxidation state of hydrogen = +1

Oxidation state of nitrogen = +5

On product side:

Oxidation state of Iron = +2

Oxidation state of Sulfur = +6

Oxidation state of oxygen = -2

Oxidation state of hydrogen = +1

Oxidation state of nitrogen = +2

As, oxidation state of Sulfur is increasing from -2 to +6, it is loosing electrons and thus it is undergoing oxidation reaction and FeS is considered as a reducing agent. And the oxidation state of Nitrogen in reducing from +5 to +2, it is gaining electrons and thus it is undergoing reduction reaction and is considered as an oxidizing agent.

Thus, The reducing agent is FeS and the oxidizing agent is

your parents i think this could be it

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."