Taking stability as the factor, which one of the following represents correct relationship?
Taking stability as the factor, which one of the following represents correct relationship?
Option 1 -
TlI > TlI₃
Option 2 -
TlCl₃ > TlCl
Option 3 -
InI₃ > InI
Option 4 -
AlCl > AlCl₃
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1 Answer
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Correct Option - 1
Detailed Solution:Tl? ³ is less stable than Tl? ¹ (inert pair effect). Going down the group 13, stability of lower oxidation state increases. In case of B, Al, Ga and In, higher O.S. +3 remains more stable than lower O.S. +1 . But, in last stable element, thallium (Tl), lower O.S. +1 become more stable than higher O.S. +3 .
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