Calculate the wavelength of the light emitted when an electron in a H ATOM DROPS FROM THE 6th to the 3rd quantum state.

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Calculate the wavelength of the light emitted when an electron in a H ATOM DROPS FROM THE 6th to the 3rd quantum state.

### Summer 2021 Quiz: Chapter 7

**Name:** Steven A.  

---

1. **Calculate the energy in a laser pulse containing \(10^9\) photons with a wavelength of 120 nanometers:**

    Answer: 36

2. **Calculate the wavelength of the light emitted when an electron in a hydrogen atom drops from the 6th to the 3rd quantum state:**

    Formula: \( E = h\nu \)

    Would this be visible to the human eye?
    
    Answer: Yes.

3. **The following electron configuration is incorrect:**

    \(1s^2 \, 2s^2 \, 2p^6 \, 3s^5 \, 3p^5 \, 3d^2\)

    - Write the correct electron configuration for this atom:
    
      Answer: \(1s^2 \, 2s^2 \, 2p^6 \, 3s^2 \, 3p^6 \, 3d^5\)
    
    - What element is this?
      
      Answer: Nitrogen

4. **The arsenic atom (As) has the electron configuration [Ar] \(4s^2 \, 3d^{10} \, 4p^3 \)**

    - Draw an orbital diagram (boxes and arrows) for the outermost electrons (in the 4s and 4p subshells) of the As atom.
      
      Diagram Description: 
      - The orbital diagram consists of boxes representing orbitals. 
      - 4s orbital has one box with two arrows pointing in opposite directions.
      - 4p orbitals have three boxes; the arrows are placed as follows: the first box with one arrow, the second box with one arrow, and the third box with one arrow, indicating the filling of the 4p orbitals.

5. **Write the abbreviated electron configuration for the \( \text{Co}^{2+} \) ion:**

    Answer: \( \text{Co}^{2+}: 1s^2 \, 2s^2 \, 2p^6 \, 3s^2 \, 3p^6 \)

---
    
*Note:* The quiz paper contains a hand-drawn orbital diagram for question 4. The explanation above translates the diagram into text form
Transcribed Image Text:### Summer 2021 Quiz: Chapter 7 **Name:** Steven A. --- 1. **Calculate the energy in a laser pulse containing \(10^9\) photons with a wavelength of 120 nanometers:** Answer: 36 2. **Calculate the wavelength of the light emitted when an electron in a hydrogen atom drops from the 6th to the 3rd quantum state:** Formula: \( E = h\nu \) Would this be visible to the human eye? Answer: Yes. 3. **The following electron configuration is incorrect:** \(1s^2 \, 2s^2 \, 2p^6 \, 3s^5 \, 3p^5 \, 3d^2\) - Write the correct electron configuration for this atom: Answer: \(1s^2 \, 2s^2 \, 2p^6 \, 3s^2 \, 3p^6 \, 3d^5\) - What element is this? Answer: Nitrogen 4. **The arsenic atom (As) has the electron configuration [Ar] \(4s^2 \, 3d^{10} \, 4p^3 \)** - Draw an orbital diagram (boxes and arrows) for the outermost electrons (in the 4s and 4p subshells) of the As atom. Diagram Description: - The orbital diagram consists of boxes representing orbitals. - 4s orbital has one box with two arrows pointing in opposite directions. - 4p orbitals have three boxes; the arrows are placed as follows: the first box with one arrow, the second box with one arrow, and the third box with one arrow, indicating the filling of the 4p orbitals. 5. **Write the abbreviated electron configuration for the \( \text{Co}^{2+} \) ion:** Answer: \( \text{Co}^{2+}: 1s^2 \, 2s^2 \, 2p^6 \, 3s^2 \, 3p^6 \) --- *Note:* The quiz paper contains a hand-drawn orbital diagram for question 4. The explanation above translates the diagram into text form
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