37. The Walsh diagram (on the right) shows the correlation of the molecular orbital diagram of AH₂ system (A = 2ⁿᵈ period elements) in conversion between linear and bent geometries. Predict which of the molecules or ions, BeH₂, CH₂, FH⁻, FH⁻, are linear?
(A) BeH₂, CH₂, FH⁻
(B) NH₂⁻, FH⁻
(C) BeH₂, FH⁻
(D) None of them are linear
(E) All of them are linear

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