Comparison of properties of Oxygen and Sulfur

Comparison of properties of Oxygen and Sulfur:

Points of Similarity:
Electronic Configuration2, 62, 8, 6
NatureHighly electronegative in nature.Highly electronegative in nature.
Oxidation StateShows an oxidation state of -2.It also shows an oxidation state of -2.
AllotropyIt shows the phenomenon of allotropy.It also exhibits allotropy.
Action of metalsIt forms the oxides-
2Mg + O2 —> 2MgO
2Cu + O2 —> 2CuO
It forms the sulfides-
Cu + S —> CuS
Fe + S —> FeS
Action of carbonIt reacts with carbon at high temperature to give CO2 or CO.
2C (excess) + O2 —> 2CO
C + O2 (excess) —-> CO2
It reacts with carbon at high temperature to give CS2.
C + 2S —> CS2
Action of hydrogenIt gives water.
2H2 + O2 —> 2H2O
It gives hydrogen sulfide.
H2 + S —-> H2S
Non-metallic natureNon-metal.Non-metal.
Points of Difference:
Physical StateOxygen is a gas.Sulfur is a solid.
AtomicityIt forms diatomic molecule as O2 and, thus, its atomicity is 2.It forms molecules of type S8 and its atomicity is 8.
CombustionIt is non-combustible but is a supporter of combustion.It is combustible and burns with a pale blue flame.
Formation of hydridesHydride of oxygen, H2O, is a liquid because of hydrogen bonding. Hydride of sulfur, H2S is a gas because sulfur being less electronegative than oxygen cannot form H-bonds.
Reducing propertyIt is a strong oxidising agent.It is a strong reducing agent and reduces, conc. HNO3 to NO2.
S + 6HNO3 —> H2SO4 + 6NO2 + 2H2O
Action of hot alkalisNo action.It forms the corresponding sulphides and thiosulfate.
4S +6NaOH —> 2Na2S + Na2S2O + 3H2O
ElectronegativityOxygen is highly electronegative in nature.Less electronegative in nature.

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