How can you explain higher stability of `BCl_3` as compared to `TlCl_3`?

Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of the periodic table of elements. How can you explain a higher stability of BCI_3 as compared to TiCI_3 ?

How can you explain the behaviour of BCl_3 and CCl_4 towards water?

How do you explain the lower atomic radius of gallium as compared to aluminium?

How do you explain the functionality of a monomer?

How can you increase the sensitivity of a potentiometer?

Comment on the stabilities of CIF_3 and lF_3 .

How would you explain that the first ionisation energy of Na is lawer than that of Mg but is second inoisation enthalpy is higher than that of Mg ?

How will you explain such classification on the basis of Band theory?

Atoms combine to form molecules to get stability. During the formation of molecules octet may be attained. But BF_3 is an exception to octet rule. Explain the stability of B_2H_6 with the help of a diagram.