Among the following which set of molecular/ionic species all have a planar structure? · ABC26IN0982

Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Hydrogen Bonding Weak Interactions · Exam: CSIR NET JUNE 2021 · 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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