Which of the following element exhibits + 3 Oxidation State only?(a) Gallium(b) Thallium(c) Indium(d) AluminiumThis question was posed to me at a job interview.The origin of the question is p-Block Elements topic in division p-Block Elements of Chemistry – Class 11

Which of the following element exhibits + 3 Oxidation State only?(a) G

1.	Which of the following element exhibits + 3 Oxidation State only?(a) Gallium(b) Thallium(c) Indium(d) AluminiumThis question was posed to me at a job interview.The origin of the question is p-Block Elements topic in division p-Block Elements of Chemistry – Class 11
Answer» Correct option is (d) Aluminium The explanation: Boron and aluminium EXHIBIT oxidation state of + 3 only, while gallium, INDIUM and THALLIUM exhibit oxidation states of both +1 and +3. As we move down the group, the tendency to exhibit + 3 Oxidation State decreases this occurs due to the inert PAIR effect.

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Which of the following element exhibits + 3 Oxidation State only?(a) Gallium(b) Thallium(c) Indium(d) AluminiumThis question was posed to me at a job interview.The origin of the question is p-Block Elements topic in division p-Block Elements of Chemistry – Class 11

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