NCERT Class XI Chemistry The p-Block Elements Solutions

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Question : 2
Total: 38
How can you explain higher stability of BCl3 as compared to TlCl3 ?
Solution:  
The higher stability of BCl3 as compared to TlCl3 can be explained with the help of inert pair effect which becomes more stable as we move down the group. Tl is more stable in its +1 oxidation state and hence TlCl3 is not stable as Tl shows an oxidation state of +3 in TlCl3.
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