Chemistry - Complete Pblock- Question with Solution | TestHub
Consider following four statements about group elements and identify correct code for your answer respectively ( True, False)
(I) Relative stability of +1 O.N. progressivly increase
(II) In O.N. is predominant
(III) +3 O.N. of Tl is highly oxidising in character
(IV) In only p -orbital electrons of outer most shell are involved in bonding
Options:
Answer:
Solution:
(I) True. Due to the inert pair effect, the stability of the +1 oxidation state increases down Group 13 (Al < Ga < In < Tl).
(II) False. For Tl, the +1 oxidation state is more stable than +3 due to the inert pair effect.
(III) True. Tl³⁺ is highly oxidizing because it readily accepts electrons to form the more stable Tl⁺.
(IV) False. In Tl³⁺, both the s and p orbital electrons of the outermost shell are involved in bonding.
Therefore, the correct code is TFTF.