Which of the following species has a trigonal planar shape?\

Question

Professor PC Thomas Classes · Answer

(b) : : $\mathrm{CH}_{3}^{-}$: Trigonal pyramidal; $\mathrm{CH}_{3}^{+}$: Trigonal planar\ $\mathrm{BF}_{4}^{-}$: Tetrahedral; $\mathrm{SiH}_{4}$ : Tetrahedral\