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2. Now imagine we add a second electron to this atom. This shares the space with the first electron.
These two electrons now fill the space around the nucleus, so that no other electrons can enter it. (The reason why this happens is beyond the scope of this journal). The atom now behaves as if it had a hard outer shell. It will not interact with other atoms. Atoms like this are called noble gases. The atom is now like helium. |
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Useful Links |
Physical Environment > Shell Model of Helium
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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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Note: Many facts have been simplified to make them easier to understand.
Click here to read Time Crystal, history of the Universe as sci-fi fantasy romance!
