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

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

Grade:12

4 Answers

Umakant biswal
5349 Points
7 years ago
@ 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 
 
mithun
20 Points
6 years ago
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.
Avhi nath
13 Points
4 years ago
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.
Rishi Sharma
askIITians Faculty 646 Points
3 years ago
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

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