What is the molecular geometry of H_3 O^+ ?

Correct answer: (A) Trigonal pyramid. H_3 O^+ has a molecular geometry of tetrahedral, since there are 4 regions of electron density surrounding the central O atom ( 3 hydrogens and 1 lone pair of electrons). The VSEPR shape would be trigonal pyramidal. Hence, the correct option is (1).

Q21 / 160 · AP EAMCET 2020 (22 Sep Shift 2) · Chemistry

What is the molecular geometry of $\mathrm{H}_3 \mathrm{O}^{+}$?

Correct answer
A
Trigonal pyramid
B
Square planar
C
Trigonal bipyramidal
D
Trigonal planar

Solution

$\mathrm{H}_3 \mathrm{O}^{+}$has a molecular geometry of tetrahedral, since there are 4 regions of electron density surrounding the central $\mathrm{O}$ atom ( 3 hydrogens and 1 lone pair of electrons). The VSEPR shape would be trigonal pyramidal. Hence, the correct option is (1).

Hence, the correct answer is option: 'A'.

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