sir how to prepare .....this chapter...what all are the must topics to prrepare...i find difficult to remember the reactions..give me a solution please

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

Important topics in p-block elemets are:

Structures of Oxoacids: phosphorus (2007), sulphur (2007),

Structures of Fluoride: sulphur (2008), xenon (2008, 2009), bromine (2009)

Interhalogen compounds (2007)

Basicity of group 15 elements (2008, 2009)

Most important topics/questions

1. tructures 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 become more stable than +6 oxidation state on going down the group.
• Oxygen can show a maximum covalency of 4 and it can not form hexa valent compound.

Also, refer to the revision notes provided by www.topperlearning.com