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Carbon is also found in coal, petroleum, and natural gas. Carbon is one of the most important elements on the periodic table (at least from the perspective of organic chemists!).
The hydrogen is the lightest element in the periodic table, giving an alternate fuel option with the hydrogen fuel cell and 90% of all the atoms in the universe are hydrogen atoms. Read Moreâ¦ Element 2: Helium. Helium is the element which you can find on the upper right side of the periodic table with atomic number 2.