Sulphur (S)

Sulphur (S)

Sulphur is the sixteenth most abundant element on earth crust


Sulphur (S)

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
  1. Sulphur is the sixteenth most abundant element on earth crust. It constitutes 0.034% by weight of the earth's crust.
     
  2. Sulphur is the p-block element and is the second member of "Chalcogen family" after oxygen.
     
  3. The group number of sulphur is 16 and period number is 3.
     
  4. Sulphur is the mostly used in manufacture of SO2, H2SO4, fire works, medicine.

Properties of Sulphur

  1. Sulphur exist as staggered 8-atom ring S8 molecule. Each sulphur atom is in sp3 -hybridised state.
     
  2. Sulphur is a non metal.
     
  3. The atomic radius, atomic volume and density of sulphur is higher than oxygen but lower than rest of the family members.
     
  4. Electronegativity of sulphur is lower than that of oxygen but higher than rest of the family members.
     
  5. 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
     
  6. Catenation property is more pronounced in sulphur as compared to rest of the family members.
     
  7. Sulphur can exhibit the range of -2 to +6 oxidation state due to availability of vacant d-orbital.
     
  8. 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
     
  9. Sulphur undergoes reduction in presence of hydrogen.

    H2 + S  H2S
     
  10. Cl2 + 2S  S2Cl2
     
  11. C + 2S  CS2
     
  12. 2As + 3S  As2S3
     
  13. 2H2O (steam) + 3S (boiling)  2H2S + SO2


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