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CBSE Class 12-science Answered

Sir, Can you give all the important equations in p and s  block elements ?

 

Asked by minipkda | 22 May, 2018, 06:42: AM
Expert Answer

Go through the properties of p block elements and do the comparative study. Properties are mostly asked.

Important topics in p-block elements are:

Structures of Oxoacids: phosphorus, sulphur,

Structures of Fluoride: sulphur, xenon, bromine 

Interhalogen compounds 

Basicity of group 15 elements 

Most important topics/questions

  1. structures of PCl5, H2SO3, H2SO4, H2S2O8, H2S2O7, HOCl, HClO2, HClO3, HClO4
  2. Complete the reactions:
  3. Conceptual questions:
  4. Draw the resonating structures of:

a) NO
b) NO2
c) N2O

  • NF3 is an exothermic compound whereas NCl3 is not.
  • NH3 is a stronger base than PH3. Why?
  • Arrange the following in order of the indicated property:
    • F2, Cl2, Br2, I2 in increasing order of bond dissociation enthalpy
    • HF, HCl, HBr, HI in increasing order of acidic strength
    • NH3, PH3, AsH3, SbH3, BiH3 in increasing order of basic strength
  • What are interhalogen compounds?
  • Sulphur has very high boiling and melting point when compared to oxygen.
  • In group 16 tendencies to show -2 oxidation state decreases on going down the group.
  • In group 16 +4 oxidation state becomes more stable than +6 oxidation state on going down the group.
  • Oxygen can show a maximum covalency of 4 and it cannot form a hexavalent compound.
Also, refer to the revision notes provided by www.topperlearning.com
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