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NEETChemistryp Block Elements (Group 13 & 14)

Which element is the exception and does not form trihalides?

Options

  1. ABoron
  2. BAluminum
  3. CGallium
  4. DThallium

Correct answer

D. Thallium

Step-by-step solution

Group 13 elements form trihalides except for TlI 3 (thallium).

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