Final answer:
The nature of the C-Mg bond in CH3MgBr is likely ionic.
Step-by-step explanation:
The nature of the C-Mg bond in CH3MgBr is likely ionic.
The C-Mg bond is formed between a metal (Mg) and a nonmetal (C). According to the periodic table, metals tend to lose electrons and nonmetals tend to gain electrons.
In this case, Magnesium (Mg) will donate its valence electron to Carbon (C), resulting in the formation of a bond where the electron is transferred from Mg to C. This transfer of electrons from Mg to C makes the C-Mg bond an ionic bond.