Chemistry - CHEMICAL BONDING Question with Solution | TestHub
In the heavier elements of p-block elements, however as we expect form the "inert pair effect, the lower oxidation state becomes more common on descending the group."
Covalent nature in ionic compound is explained on the basis of polarisation effect.
The correct order of stability is :
Options:
Answer:
Solution:
Question Explanation: Determining the stability of oxidation states in p-block elements.
Concept: Inert Pair Effect.
Solution: On descending a group, the stability of the lower oxidation state (two units less than group valency) increases due to the inert pair effect.
Sn: Sn4+ > Sn2+ (Higher state more stable earlier in group).
Pb: Pb2+ > Pb4+ (Pb is in the 6th period; 6s2 electrons are held tightly, making Pb2+ much more stable than Pb4+ .).
Tl: Tl+ > Tl3+ (Thallium is at the bottom of Group 13).
Bi: Bi3+ > Bi5+ (Bismuth is at the bottom of Group 15).
Final Answer: Option (B)