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Question: Answered & Verified by Expert
In some of the reactions thallium resembles aluminium, whereas in others it resembles group I metals. Support this statement by providing some evidence.
Chemistryp Block Elements (Group 15, 16, 17 & 18)NEET
Options:
  • A Thallium forms a trivalent cation (Tl³⁺) in reactions similar to aluminium, indicating a similarity in its electronic configuration.
  • B Thallium readily forms a univalent cation (Tl⁺) in reactions similar to group I metals, demonstrating a similarity in its ionization behavior.
  • C Thallium exhibits both univalent and trivalent states, allowing it to exhibit properties of both aluminium and group I metals in different reactions.
  • D Thallium has a similar atomic radius to both aluminium and group I metals, contributing to its ability to exhibit similar properties in different reactions.
Solution:
2291 Upvotes Verified Answer
The correct answer is: Thallium exhibits both univalent and trivalent states, allowing it to exhibit properties of both aluminium and group I metals in different reactions.
Correct Option is : (C)
Thallium exhibits both univalent and trivalent states, allowing it to exhibit properties of both aluminium and group I metals in different reactions.

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