TS EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Which one of the following elements does not form triiodide on reacting with iodine?
- A \(\mathrm{B}\)
- B TI
- C \(\mathrm{Al}\)
- D Ga
Answer & Solution
Correct Answer
(B) TI
Step-by-step Solution
Detailed explanation
Boron show consistently +3 oxidation state in its compounds while rest of the elements show +1 as well as +3 oxidation states. The +1 oxidation state becomes more and more stable as we move down the group, i.e. \[ \mathrm{Al} < \mathrm{Ga} < \mathrm{In} < \mathrm{Tl} \] This is…
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