P-Block Elements Ques 61
Question: In IIIA group, Tl (thalium) shows +1 oxidation state while other members show +3 oxidation state. Why
[JEE Orissa 2004]
Options:
A) Presence of lone pair of electron in Tl
B) Inert pair effect
C) Large ionic radius of $ Tl $ ion
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
Inert pair effect become significant for the 6th and 7th period of p-block element.
