1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Number of protons in a 5g orbital

  1. Dec 5, 2009 #1
    1. The problem statement, all variables and given/known data

    Using a strict interpretation of the n+l rule, how many protons would an atom need to create a ground state electron configuration with one electron in a 5g orbital? Give electron configuration.

    2. Relevant equations


    3. The attempt at a solution

    g is an l value of 4, 4+5 = 9. So 5g is filled after other orbitals with n+l's lower than 9, or equal but with higher n values.

    This puts 5g after 9s, does it not? I have no clue what to do from here.
     
  2. jcsd
  3. Dec 5, 2009 #2

    Borek

    User Avatar

    Staff: Mentor

    Atom is neutral - that means charge of electrons and charge of nucleus cancel out, they are identical (just one is positive, other negative).
     
  4. Dec 5, 2009 #3
    The answer (which is given) is 121 protons. Since the atom is neutral, there'd also be 121 electron, so I'd look for an electron configuration where all orbitals before 5g + 1 = 121.

    I don't know what 5g comes after though.
     
  5. Dec 5, 2009 #4

    Borek

    User Avatar

    Staff: Mentor

  6. Dec 5, 2009 #5
    Okay, added up all electrons up to and including 8s and got 120. Adding one for 5g gives me 121.

    I still don't understand why it has to be preceded by 8s though. Why not, say, 6d?
     
  7. Dec 5, 2009 #6

    Borek

    User Avatar

    Staff: Mentor

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Number of protons in a 5g orbital
  1. Electrons and protons (Replies: 14)

  2. Number of protons (Replies: 1)

Loading...