Paper: CSIR-NET December 2012 · Subject: Physical Chemistry · Chapter: Group Theory · Topic: Symmetry Elements Point Groups · Marks: 2 · Difficulty: Easy
The molecular that has an $\mathrm{S}_{6}$ symmetry element is
(a)$\mathrm{B}_{2} \mathrm{H}_{6}$
(b)$\mathrm{CH}_{4}$
(c)$\mathrm{PH}_{5}$
(d)$\mathrm{SF}_{6}$
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
SF₆ (O_h) has S₆ axes along the body diagonals; CH₄ has S₄, diborane (D₂h) and PH₅ (D₃h) have no S₆.