Sulphur is the sixteenth most abundant element on earth crust
|Sulphur Atomic Number||: 16|
|Sulphur Atomic Mass||: 32|
|Sulphur Electronic Configuration||: [Ne]3s23p4|
|Sulphur Group Number||: 16 (VlA)|
|Sulphur Period Number||: 3|
|Sulphur Relative Abundance||: 16|
- Sulphur is the sixteenth most abundant element on earth crust. It constitutes 0.034% by weight of the earth's crust.
- Sulphur is the p-block element and is the second member of "Chalcogen family" after oxygen.
- The group number of sulphur is 16 and period number is 3.
- Sulphur is the mostly used in manufacture of SO2, H2SO4, fire works, medicine.
Properties of Sulphur
- Sulphur exist as staggered 8-atom ring S8 molecule. Each sulphur atom is in sp3 -hybridised state.
- Sulphur is a non metal.
- The atomic radius, atomic volume and density of sulphur is higher than oxygen but lower than rest of the family members.
- Electronegativity of sulphur is lower than that of oxygen but higher than rest of the family members.
- Melting point and boiling point of sulphur are higher than the oxygen due to its bigger size than oxygen but lower than rest of the chalcogen members
- Catenation property is more pronounced in sulphur as compared to rest of the family members.
- Sulphur can exhibit the range of -2 to +6 oxidation state due to availability of vacant d-orbital.
- Sulphur reacts with acid where it itself gets oxidised.
S + 2H2SO4 (Conc.) 3SO2 + 2H2O
S + 6HNO3 (Conc.) H2SO4 + 6NO2 + 2H2O
4S + 6NaOH 2Na2S + Na2S2O3 + 3H2O
- Sulphur undergoes reduction in presence of hydrogen.
H2 + S H2S
- Cl2 + 2S S2Cl2
- C + 2S CS2
- 2As + 3S As2S3
- 2H2O (steam) + 3S (boiling) 2H2S + SO2