The asymmertric stretching mode of the H₂O is shown below. The molecular plane is yz and the symmetry axis of… · ABC26PH0526
Subject: Physical Chemistry · Chapter: Solid State Chemistry · Topic: Solid State – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Medium
The asymmertric stretching mode of the $\mathrm{H_2O}$ is shown below. The molecular plane is yz and the symmetry axis of $\mathrm{H_2O}$ is z. 
This vibration transforms as the irreducible representation
This vibration transforms as the irreducible representation(a)$\mathrm{A}_{1}$
(b)$\mathrm{B}_{1}$
(c)$\mathrm{A}_{2}$
(d)$\mathrm{B}_{2}$
Answer
Answer: D ✓ checked by 4AB · confidence high
The source book printed B; on checking, D is correct — see the explanation.
Book printed (b).
Explanation
With the molecule in the yz plane, the antisymmetric O–H stretch is symmetric to σ(yz), antisymmetric to C₂ and σ(xz) — B₂ (like y) (d).
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