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| existing as free, uncombined atoms |
| a vessel, commonly a glass bulb with a long neck bent downward, used for distilling or decomposing substances by heat |
Grignard reagent
any of numerous organic derivatives of magnesium (Mg) commonly represented by the general formula RMgX (in which R is a hydrocarbon radical: CH3, C2H5, C6H5, etc.; and X is a halogen atom, usually chlorine, bromine, or iodine). They are called Grignard reagents after their discoverer, French chemist Victor Grignard, who was a corecipient of the 1912 Nobel Prize for Chemistry for this work
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