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Physical Environment > Hydrogen Molecule |
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This site tells the story of the history of the universe. Click Earlier and Later to follow the story. Note: Many facts have been simplified to make them easier to understand. |
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When 2 hydrogen atoms meet they are joined together by a covalent bond. Each atom then shares two electrons. This fills the space around the atom, in the same way that the 2 electrons around a helium atom do, and give the atom a hard outer shell. | |
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Physical Environment > Hydrogen Molecule |
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Basic Information |
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