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Grade: 12

                        

How can you explain higher stability of Bcl3 as compared to Tlcl3

4 years ago

Answers : (4)

Umakant biswal
5359 Points
							
@ shinaz 
in a group while coming down from top to bottom , due to increase in size and involvement of d and f orbital , the outermost ns2 electron are not shielded or have ineffective sheilding by d or f orbital , so, the s orbital electron remian paired and there increase a inert pair effect , due to which s orbital electron are not used in bonding and +1 oxidation state become more stable while +3 o.s doesnot stable . 
hence , first element boron show +3 o.s in bcl3 becomes stable while the last element of group thalium doesnot show a stable +3 o.s 
so, bcl3 is stable while ticl3 is unstable . 
HOPE IT HELPS 
 
4 years ago
mithun
20 Points
							
Boron and thallium belong to group 13 of the periodic table. In this group, the +1 oxidation state becomes more stable on moving down the group. BCl3 is more stable than TlCl3 because the +3 oxidation state of B is more stable than the +3 oxidation state of Tl. In Tl, the +3 state is highly oxidising and it reverts back to the more stable +1 state.
2 years ago
Avhi nath
13 Points
							
Boron and thalium ate belongs to group 13.boron shows +3 oxidation state where  thalium shows +3,and +1,oxidation state. And for this compound BCL3 and TLCL3, B and TL shows their +3 oxidation state. In a group while going top to bottom radius are increase and involvement of d, f orbital. So S oribal's electron dose not use for bonding, so +1 oxidation state became stable than +3 oxidation state while down the group. So for BCL3 and TLCL3, BCL3 is more stable than TLCL3 because +3 oxidation state of B is more stable than TL.
7 months ago
Rishi Sharma
askIITians Faculty
614 Points
							Dear Student,
Please find below the solution to your problem.

Boron and thallium belong to group 13 of the periodic table.
In this group, the +1 oxidation state becomes more stable on moving down the group.
BCl3 is more stable than TlCl3 because the +3 oxidation state of B is more stable than the +3 oxidation state of Tl.
In Tl, the +3 state is highly oxidising and it reverts back to the more stable +1 state.

Thanks and Regards

3 months ago
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