Acetylene would likely release the most energy and create the biggest "boom" if ignited. This is because acetylene has the highest energy content of the three gases, making it more explosive when ignited. Additionally, acetylene has a wider flammability range and burns at a higher temperature than both ethane and ethylene.

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Acetylene would create the biggest explosion when ignited because it has the most energy, burns at a higher temperature, and has a wider range of flammability compared to ethane and ethylene.