Which is true for an element R present in 13th group of the periodic table ?

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It is gas at room temperature

It has oxidation state of + 4

It forms R2O3

It forms R X2

answer is C.

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Detailed Solution

Group 13 elements are in + 3 and + 1 oxidation state.Thus they form R2O3 type oxide. Ex. Al2O3

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