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The incorrect statement among the follow...

The incorrect statement among the following is

A

Among IIIA group elements the density increases from B to Tl

B

TICI is more stable than `TICI_3`

C

Boron has 2 penultimate electrons where as Aluminium has 18 penultimate electrons

D

Boron exhibits allotropy

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-ELEMENTS OF BORON FAMILY-PRACTICE EXERCISE
  1. The Nature of Al2 O3 is

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  2. The correct order of ionization potential [IP1] among the IIIA group e...

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  3. The incorrect statement among the following is

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  4. B2 H6 + NH3 overset(120^@ C)to X . Where 'X' is

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  5. Na2 B4 O7 10 H2 O overset("conc. HCl")to A. Compound 'A' is :

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  6. Indium and thallium of Ill group have nearly similar atomic radii due ...

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  7. The anhydride of boric acid is

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  8. The statements regarding Diborane are i) B2 H6 is stable in the ab...

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  9. Which of the following chloride is most unstable ?

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  10. The reason for the formation of hydrogen bridge bond in B2 H6 is

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  11. The chloride of one of the following elements is a stable covalent com...

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  12. Which of the following is not a Lewis acid?

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  13. Orthoboric acid behaves as weak monobasic acid giving H3 O^+ and

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  14. Select correct statement(s) about H3 BO3

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  15. The reactants in the industrial method of preparation of diborane are

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  16. The total number of vacant orbitals involved in bond formation in dibo...

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  17. Standard electrode potential values for Al^(3+)//Al is -1.66V and tha...

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  18. Which is not correct in case of boric acid ?

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  19. When diborane undergoes complete methylation, the number of hydrogen a...

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  20. Diborane reacts with ammonia under different conditions to give a vari...

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