Which of the following species has tetrahedral geometry?


The shape of all the compounds can be calculated from hybridization, which can be determined by the application of formula:


H = number of orbitals involved in hybridization
V= valence electrons of a central atom
M= number of monovalent atoms linked with the central atom
C = charge on the cation
A = charge on the anion


Thus, the shape of all molecules are


BH-4 is tetrahedral, NH-2 is V-shape, CO32- is triangular planar and H3 O+ is pyramidal.

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