Home
Class 11
CHEMISTRY
Aluminium forms [AIF(6)]^(3-) ion but bo...

Aluminium forms `[AIF_(6)]^(3-)` ion but boron does not form `[BF_(6)]^(3-)` ion. Explain.

Text Solution

Verified by Experts

Boron can show a maximum valency as well as co-ordination number of four. Therefore it cannot form `[BF_(6)]^(3-)` ion where it is to exhibit co-ordination number six. On the other and, aluminium can extend its valency as well as co-ordination number to six due to the presence of vacant 3d orbitals. Therefore, it can form `[AIF_(6)]^(3-)` ion.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • P BLOCK ELEMENTS (GROUP 13 AND 14 )

    DINESH PUBLICATION|Exercise Problems|3 Videos

  • P BLOCK ELEMENTS (GROUP 13 AND 14 )

    DINESH PUBLICATION|Exercise Value based|2 Videos

  • P BLOCK ELEMENTS (GROUP 13 AND 14 )

    DINESH PUBLICATION|Exercise Short answer type|24 Videos

  • ORGANIC CHEMISTRY - SOME BASIC PRINCIPLES & TECHNIOUES

    DINESH PUBLICATION|Exercise PURIFICATION & CHARACTERISATION OF ORGANIC COMPOUNDS|38 Videos

  • PHYSICAL AND CHEMICAL EQUILIBRIA

    DINESH PUBLICATION|Exercise ULTIMATE PREPARATORY PACKAGE|13 Videos

Similar Questions

Explore conceptually related problems

Aluminium forms [AlF_(6)]^(3-) ion but boron does not form [BF_(6)]^(3-) ion.

Explain the following (a) Gallium has higher ionisation enthalpy than aluminium (b) Boron does not exist as B^(3+) ion (c) Aluminium forms [AlF_(6)]^(3-) ion but boron does not form [BF_(6)]^(3-) ion.

Knowledge Check

  • Aluminum forms [AIF_(6)]^(3-) but boron does not form [BF_(6)]^(3-) because

    A
    The atomic size of B is small
    B
    Of absence of d-orbital in B atom
    C
    Of high I.P B-atom
    D
    B is non -metal

  • Assertion (A) : Al forms [AlF_(6)]^(3-) ions but B does not form [BF_(6)]^(3-) ions. Reason (R) : B does not react with F_(2) .

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true but R is not a correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true

    • Similar Questions

    Explore conceptually related problems

    Explain the following : (a) Boron has high melting and boiling points. (b) The p pi - p pi back bonding occurs in the halides of boron and not in those of aluminimum. ( c) Boron and aluminium halides behave as Lewis acids. (d) Aluminium forms [AlF_(6)]^(3-) ion, but boron does not form [BF_(6)]^(3-) ion.

    Explain the following : (i) Gallium has higher ionisation enthalpy than aluminium. (ii) Boron does not exists as B^(3+) ion. (iii) Aluminium forms [AlF_(6)]^(3-) ion but boron does not form [BF_(6)]^(3-) ion. (iv) PbX_(2) is more stable than PbX_(4) . (v) Pb^(4+) acts as an oxidising agent but Sn^(2+) acts as a reducing agent. (vi) Electron gain enthalpy of chlorine is more negative as compared to fluorine. (vii) Tl(NO_(3))_(3) acts as an oxidising agent. (viii) Carbon shows catenation property but lead does not. (ix) BF_(3) does not hydrolyse completely (modified). (x) Why does the elemnet silicon, not form a graphite like structure whereas carbon does.

    Aluminium forms AlF_(6)^(3-) but boron does not form BF_(6)^(3-) . Why so ?

    Boron is unable to form BF_(6)^(3-) – ion. Explain.

    Boron is unable to form BF_(6)^(3-) ion. Explain.

    Why boron does not form B^(3+) ion?

    Home
    Profile