4AB › Chemistry PYQ › CSIR-NET › June 2021 › Q6Q6 · CSIR-NET Chemistry, June 2021 Paper: CSIR-NET June 2021 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Hydrogen Bonding Weak Interactions · Marks: 2 · Difficulty: Easy
Among the following which set of molecular/ionic species all have a planar structure?
(a) $\mathrm{BrF}_{3}, \mathrm{FClO}_{2}$ and $\left[\mathrm{XeF}_{5}\right]^{-}$
(b) $\mathrm{XeO}_{3},\left[\mathrm{ClF}_{4}\right]^{-}$and $\mathrm{FClO}_{2}$
(c) $\left[\mathrm{ClF}_{4}\right]^{-}, \mathrm{BrF}_{3}$ and $\left[\mathrm{XeF}_{5}\right]^{-}$
(d) $\mathrm{FClO}_{2},\left[\mathrm{XeF}_{5}\right]^{-}$and $\mathrm{XeO}_{3}$
Answer Answer: C ✓ checked by 4AB · confidence high
Explanation ClF₄⁻ (AX₄E₂) square planar, BrF₃ (AX₃E₂) T-shaped planar, XeF₅⁻ (AX₅E₂) pentagonal planar. XeO₃ is pyramidal and FClO₂ is pyramidal, so the other sets fail.
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