Which of the following statements is true about element R present in 13 t h group of the periodic table? Options: A . &nbsp It is gas at room temperature. B . &nbsp It has oxidation state of + 4. C . &nbsp It forms R 2 O 3 . D . &nbsp It forms R X 2 .

Which of the following statements is true about element R present in

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Question -

Which of the following statements is true about element R present in $13^{t h}$ group of the periodic table?

Options:

A . It is gas at room temperature.

B . It has oxidation state of + 4.

C . It forms

R_{2} O_{3}

D . It forms

R X_{2}

Answer: Option C
:
C

Group 13 elements belong to the boron family. The oxidation state of group 13 elements is either +1 or +3. All the group 13 elements are solids at room temperature. Valency of element R present in $13^{t h}$ group of the periodic table is 3. Hence it can form $R_{2} O_{3}$ when it reacts with oxygen.

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