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General Chemistry

yingao88

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Feb 1, 2013
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  1. Pre-Medical
    a calcium atom has an electron with the quantum numbers 3, 2, 0, and 1/2 for n, l, M1, and Ms repectively. Which of the following is the most likely explanation for this?

    A) the electron moved to a higher energy level by emitting a photon of light.
    B) the calcium atom is an anion
    C) the quantum numbers correspond to one of calcium's valence electrons.
    D)the calcium atom contains an excited electron.

    I am very confused on the question, i dont know what the question is asking for. How can i approach this question?
     

    Temperature101

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      a calcium atom has an electron with the quantum numbers 3, 2, 0, and 1/2 for n, l, M1, and Ms repectively. Which of the following is the most likely explanation for this?

      A) the electron moved to a higher energy level by emitting a photon of light.
      B) the calcium atom is an anion
      C) the quantum numbers correspond to one of calcium's valence electrons.
      D)the calcium atom contains an excited electron.

      I am very confused on the question, i dont know what the question is asking for. How can i approach this question?

      ......
       
      Last edited:

      Temperature101

      Membership Revoked
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      1. Medical Student
        a calcium atom has an electron with the quantum numbers 3, 2, 0, and 1/2 for n, l, M1, and Ms repectively. Which of the following is the most likely explanation for this?

        A) the electron moved to a higher energy level by emitting a photon of light.
        B) the calcium atom is an anion
        C) the quantum numbers correspond to one of calcium's valence electrons.
        D)the calcium atom contains an excited electron.

        I am very confused on the question, i dont know what the question is asking for. How can i approach this question?
        it's a weird question
         

        amberkre

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        May 7, 2012
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          n=3 means third energy level
          l=2 means d orbital
          ml= 0 --> the electron is in the dyz orbital (the 3rd d orbital out of 5)
          ms= 1/2--> means positive spin

          A)wrong definition of excitation-- the energy would be absorbed not emitted
          B) anion- means it has an extra electron so it would now have 21 electrons not 19. --> however this would put the new electron in the first d orbital not the 3rd so this is incorrect
          C) not true, calcium normally does not have an electron in the d orbital
          D) if an electron is in the d orbital (not normal) it is in a higher energy orbital, so it is excited (also this is the only possible choice left)
           
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          Temperature101

          Membership Revoked
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          May 27, 2011
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          1. Medical Student
            n=3 means third energy level
            l=2 means d orbital
            ml= 0 --> the electron is in the dyz orbital (the 3rd d orbital out of 5)
            ms= 1/2--> means positive spin

            A)wrong definition of excitation-- the energy would be absorbed not emitted
            B) anion- means it has an extra electron so it would now have 21 electrons not 19. --> however this would put the new electron in the first d orbital not the 3rd so this is incorrect
            C) not true, calcium normally does not have an electron in the d orbital
            D) if an electron is in the d orbital (not normal) it is in a higher energy orbital, so it is excited (also this is the only possible choice left)

            My mistake... I deleted my anion blunder. However, D is the only one left but I don't think it's the correct answer.
             

            Jepstein30

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            Jun 29, 2011
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            1. Medical Student
              a calcium atom has an electron with the quantum numbers 3, 2, 0, and 1/2 for n, l, M1, and Ms repectively. Which of the following is the most likely explanation for this?

              A) the electron moved to a higher energy level by emitting a photon of light.
              B) the calcium atom is an anion
              C) the quantum numbers correspond to one of calcium's valence electrons.
              D)the calcium atom contains an excited electron.

              I am very confused on the question, i dont know what the question is asking for. How can i approach this question?

              For an electron with 3, 2, 0 and 1/2, you'd expect it to be 3rd energy level, in a d orbital and the 3rd electron in the d-block. It's telling you where the electron is and then asking you how it got there in a calcium atom.
               
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