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The Orbital of Nitrogen atom in Ammonia

  1. Jan 18, 2012 #1
    1. The problem statement, all variables and given/known data
    Experimental evidence suggests that the nitrogen atom in ammonia, NH3 , has four orbitals in the shape of a pyramid or tetrahedron. Draw an energy-level diagram to show the formation of these orbitals. (Hint: No electron promotion is required.)

    2. Relevant equations

    3. The attempt at a solution
    First answer: http://i979.photobucket.com/albums/ae277/clubangel777/Science Homework/SCH4U-BQuestion6ab.jpg

    Second answer: http://i979.photobucket.com/albums/ae277/clubangel777/Science Homework/HybridAmmoniaNitrogen.jpg

    My sister came up with the first answer, but the teacher emailed her the second answer. There is confusion because she thinks Nitrogen should have 7 Electrons and the teacher said there are 6 Electrons.
  2. jcsd
  3. Jan 19, 2012 #2


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    Nitrogen is the seventh element, it has 7 protons in the nucleus and seven electrons in its electron shells; two of them on 1s orbitals and five on the second shell, on sp3 hybrids. Three of them are unpaired and ready to make covalent bonds with hydrogen. The first picture is correct.

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