periodic table essential elements |
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| navigate by keyword : active atom atomic carbon chart chemistry collage educational eight electron element gas gaseous group helium hydrogen light lithium mass metal neutron nonmetal one organic oxygen periodic poster proton reactive schedule science table three two unstable weight |
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| An image of the three essential elements from the Periodic Table: Hydrogen, Carbon and Oxygen. Each element is 3 MP in dimension. Using hydrogen as an example: Number 1 represents the number of protons one hydrogen atom has and 1.0079 is its atomic mass. Unique fact: a hydrogen atom has only one electron - hence it is an extremely unstable element. |
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