20. What is the multiplicity of the ³¹P NMR signal in the octahedral PF₆⁻ anion in solution? (³¹P, I = ¹/₂; ¹⁹F, I = ¹/₂)
(A) singlet
(B) doublet
(C) quartet
(D) sextet

(E) septet

What is the multi...