Solve this following


Aluminium is usually found in $+3$ oxidation stagte. In contarast, thallium exists in $+1$ and $+3$ oxidation states. This is due to :


  1. lanthanoid contraction

  2. lattice effect

  3. diagonal relationship

  4. inert pair effect

Correct Option: , 4


Inert pair effect is promenent character of pblock element.

Leave a comment


Click here to get exam-ready with eSaral

For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.

Download Now