Final answer:
Simple molecular substances are generally not good conductors of electricity because they lack ions or free-moving electrons.
Step-by-step explanation:
The statement, 'Simple molecular substances are generally good conductors of electricity' is False. Simple molecular substances, also known as covalent compounds, typically do not conduct electricity because they consist of molecules with neutral charge. For example, substances like water (H2O) and methane (CH4) are simple molecular substances but are not conductors of electricity. In order for a substance to conduct electricity, it needs to contain ions or free-moving electrons, such as in ionic compounds or metals.
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