Where would you expect to find the ¹H NMR signal of (CH₃)₂Mg relative to the TMS signal? (See Table 12.3.)

Table 12.3

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The Electronegativities of Some of the Elementsa IA IIA IB IIB А IVA VA VIA VIIA H 2.1 Li Ве В C N F 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Na Mg Al Si P S CI 0.9 1.2 1.5 1.8 2.1 2.5 3.0 K Са Cu Zn Ga Ge Br 0.8 1.0 1.8 1.7 1.8 2.0 2.8 Cd I Ag 1.4 Sn 1.5 1.7 2.5 Pb Hg 1.5 1.6 "From the scale devised by Linus Pauling