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4. We can construct three sp2 hybrid orbitals (i.e., φ_un = 1,2,3) as follows:

φ₁=a₁(2s)+b₁(2pz)

φ₂=a₂(2s)+_b2(2pz)+c2(2px)
φ3 =a₃(2s)+b₃(2pz)+c₃(2p_x)
where 2s,2px and 2pz are normalized atomic orbitals and a_n,b_n and c_n are constants. Assume these hybrid orbitals are normalized and orthogonal to each other, then which of the following is incorrect.
(A)a₁ = a₂ = a₃ =
(B)b₁=
(C)b2 =b3 =-
(D)c₂=c₃ =
(E) =1