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Which is true for an element R present i...

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

A

It forms an oxide of the type `R_(2)O_(3)`

B

It has an oxidation state of `+4`

C

It is gas at room temperature

D

It forms a halide of the type `RX_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Group `IIIA` or group `13` elements have `ns^(2)np^(1)` configuration.
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A2Z-P BLOCK ELEMENTS ( Group 13 -14)-Compound Of Boron Family
  1. An aqueous solution of hydrated aluminium chloride contains the follow...

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  2. The dissolution of Al(OH)(3) by a solution of NaOH results in the form...

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  3. Which is true for an element R present in 13 th group of the perodic ...

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  4. The bonds present in borazole are:

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  5. Electrolytic reduction of alumina to aluminium by Hall-Heroult process...

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  6. Borax is prepared by treating coleminate with

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  7. How can the following reaction be made to proceed in forward direction...

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  8. Which one of the following is the correct statement ?

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  9. Which of the following statements regarding boric acid is false?

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  10. The number of -OH units directly linked to boron atom in Na(2)B(4)O(7)...

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  11. In diborane, the two H-B-H angles are nearly

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  12. Diborane upon hydrolysis gives

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  13. AlCl(3) on hydrolysis gives

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  14. Aqueous solution containing 1 mol of borax raects with 2 mol of acids....

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  15. An aqueous solution of borax is

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  16. Boric acid heated to red hot gives

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  17. Which of the following has the minimum heat of dissociation?

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  18. There are two H-bridge bonds in diborane molecule because there are

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  19. Identify the statement that is not correct as far as structure of dibr...

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  20. Boric acid on heating at 150^(@)C gives

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