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rj957 rj957
wrote...
11 years ago
The element with atomic number 8 would need 2 electrons to fill its valence shell, where as hydrogen only needs 1 to fill its valence shell right?

The answer to this is 2 maximum covalent bonds, but I cannot figure out why. Science savvy people heeeelp I have a bio 2 exam coming up and my professor and TA are slow at responding to email! Thanks!
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Mickymouse Author
wrote...
11 years ago
This element is oxygen. It needs 8 electrons to fill its valence shell. Two electrons are in a lower shell. That leaves six in its valence shell.  Hydrogen contributes one electron.  So two hydrogens will complete the valence shell of oxygen.
Answer accepted by topic starter
irinairina
wrote...
Top Poster
Posts: 919
11 years ago
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wrote...
11 years ago
Element having atomic no. 8 need 2 electron to acheive a stable elctronic configuration i.e. 2,8. The H atom have only 1 electron and need only 1 electron to attain a stable configuration. Therefore,  2 covent bonds will be formed.
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