The geometry of a complex species can be understood from the knowledge of type of hybridisation of orbitals of central atom. The hybridisation of orbitals of central atom in `[B(OH_(4))]^(-)` and the geometry of the complex are respectively.

Options

A. `sp^(3)`, tetrahedral
B. `sp^(3)`, square planar
C. `Sp^(3) d^(2)`, octahedral
D. `dsp^(2)`, square planar

Answer

A

Explanation

Structure of `B(OH)_(4)^(-)` is
`underset("4Bond pair +0 Lone pair")(HO- underset(underset(OH)(|))overset(overset(OH)(|))(B^(-))- OH)`
Hybridisation `-sp^(3)`
Geometry – Tetrahedral