Short Answer TypeExplain the following:
(i) Boron has high melting and boiling points.
(ii) Aluminium is a good reducing agent.
Why boron forms electron deficient compounds?
Boron has only three electrons in the outermost shell which it can share with other atoms. Hence in their compounds, there are only six electrons present around B-atom i.e. octet is not complete. Hence, boron forms electron deficient compounds.
Long Answer TypeDiscuss the characteristics of Group-13 elements in terms of metallic character and their tendency to exhibit inert pair effect.
Short Answer TypeBoron chloride exists a monomer while in the same group anhydrous, AlCl3 exists as a dimer?
White fumes appear around the bottle of anhydrous aluminium chloride.
Or
Why aluminium chloride in air?
Long Answer TypeSuggest a reason why the B - F bond lengths in BF3 (130 pm) and 
(143 pm) differ?
Or
Why B - F bond length in BF3 is smaller than the expected value?
Short Answer Type
Switch
. Assign the hybridization of boron in these species ?
