A. by lowering the activation energy
Answer: Noble gas configuration is the ionisation of valence electrons using the octet rules.
Explanation:
Noble gases are the halogen, iodine etc. they form molecules using anion valence electrons in order build octet structures.
Crude oil, commonly known aspetroleum<span>, is a liquid </span>found<span> within the Earth comprised of hydrocarbons, organic compounds and small amounts of metal. Hope this helps</span>
C chemical since it is after all made of chemicals