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Boron is unable to form BF6^(3-) ion bec...

Boron is unable to form `BF_6^(3-)` ion because of

A

high electronegativity

B

non availability of d-orbitals

C

maximum covalency of boron is six

D

small size of boron

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The correct Answer is:
B
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AAKASH SERIES-ELEMENTS OF BORON FAMILY-PRACTICE EXERCISE
  1. The reactants in the industrial method of preparation of diborane are

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

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

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

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

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

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  7. 2Al + 6HCl to 2Al^(3+) + 6Cl^- + 3H2 2Al + 2NaOH + 6H2 O to 2Na(OH)...

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  8. The oxides of group 13 elements are given as A) B2 O3 B) Al2 O3 ...

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  9. Aluminium liberates dihydrogen gas with both dil.HCI and aqueous NaOH....

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  10. Boron is unable to form BF6^(3-) ion because of

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  11. The compound formed when diborane reacts with trimethyl amine is

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  12. Which of the following is formed when diborane reacts with sodium hydr...

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  13. LiH + B2 H6 overset("dry ether")to X In this reaction 'X' is used ...

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  14. The use of aluminium and its compounds for domestic purposes is now re...

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  15. On a weight - to - weight basis, the electrical conductitity of alumin...

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  16. Structure of -BH2 group is

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  17. Empirical formula of inorganic benzene is

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  18. Diborane on heating to 200^@C with ammonia it gives

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  19. Diborane reacts with HCl in the presence of AICI3 and liberates

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  20. What is the nature of aqueous borax solution ?

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