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Among the following species, identify th...

Among the following species, identify the isostuctural pairs
`NF_(3). NO_(3)^(-), BF_(3), H_(3)O, HN_(3)`

A

`[NF_(3), NO_(3)^(-)] and [BF_(3), H_(3)^(+)O]`

B

`[NF_(3), NH_(3)], [NO_(3)^(-), BF_(3)]`

C

`[NF_(3), H_(3)^(+)O] and [NO_(3)^(-), BF_(3)]`

D

`[NF_(3), H_(3)^(+)O] and [HN_(3), BF_(3)]`

Text Solution

Verified by Experts

The correct Answer is:
c
For species to be isosturtu8ral they should have same hybridized state same number of `b.p.` and `l.p.`

Hybridized statye
`NF_(3) H = (1)/(2) (5+3) = 4 implies N is sp^(3)`hybridized `1`
`NO_(3)^(-) H = (1)/(2) (5+1) = 3 implies N is sp^(3)`hybridized `0`
`BF_(3) H = (1)/(2) (3+3) = 3 implies N is sp^(3)`hybridized `0`
`B_(3)O^(+) H = (1)/(2) (6+3-1) = 4 implies O is sp^(3)`hybridized `1`
These three `sp^(2)`- hydrid orbitals are attached to each other trigonally with an angle `120^(@)` and they are overlap with three p-orbitals of three F-atom on their exes. Hence the geometry of `BF_(3)` molecule is trigonal planer

Thus isostructure pairs are `[NF_(3), H_(3)O^(+)]` and `[NO_(3)^(-), BF_(3)]`
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Knowledge Check

  • Among the following species identify the isostructural pairs NF_(3), NO_(3)^(-) , BF_(3), H_(3)O^(+) , HN_(3)

    A
    `[NF_(3),NO_(3)]` and `[BF_(3),H_(3)O^(+)]`
    B
    `[NF_(3), HN_(3) ]` and `[NO_(3)^(-) , BF_(3) ]`
    C
    `[NF_(3) , H_(3)O^(+)]`and `[NO_(3)^(-) , BF_(3) ]`
    D
    `[NF_(3) ,H_(3)O^(+)]` and `[N_(3)H,BF_(3)]`

  • Among the following species, identify the isostructural paris NF_(3), NO_(3)^(-) , BF_(3), H_(3)^(+) O , HN_(3)

    A
    `[NF_(3),NO_(3)^(-)] and [ BF_(3), H_(3)^(+) O]`
    B
    `[NF_(3), NH_(3)] and [NO_(3)^(-), BF_(3)]`
    C
    `[NF_(3),H_(3)^(+)o] and [NO_(3)^(-), BF_(3)]`
    D
    `[NF_(3), H_(3)^(+) O] and [HN_(3), BF_(3)]`

  • Among the following species , identity the isostural pairs : NF_(3) , NO_(3)^(-), BF_(3), H_(3)O^(+), NH_(3)

    A
    `[NF_(3), NO^(-)] " and " [BF_(3), H_(3)O^(+)]`
    B
    `[NF_(3), NH_(3)] " and " [NO_(3)^(-), BF_(3)]`
    C
    `[NF_(3), H_(3)O^(+)] "and" [NF_(3)^(-), BF_(3)]`
    D
    `[NF_(3), H_(3)O^(+)] " and" [NH_(3), BF_(3)]`

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