The valence shell electron configurations shown below correspond to different states for a neutral atom of a certain element. (A) (B) 4s 4p 5s 4s 4p 5s (C) (D) 4s 4p 5s 4s 4p 5s What is the symbol of element Which is the highest excited state (A, B, C, or D)

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The valence shell electron configurations shown below correspond to different states for a neutral atom of a certain element.

**(A)**  
- **4s**: ↑↓  
- **4p**: ↑  ↑  ↑  
- **5s**: (empty)

**(B)**  
- **4s**: ↑↓  
- **4p**: ↑↓ ↑  ↑   
- **5s**: (empty)

**(C)**  
- **4s**: ↑↓  
- **4p**: (empty, empty, empty)  
- **5s**: (empty)

**(D)**  
- **4s**: ↑↓  
- **4p**: ↑↓ (empty, empty)  
- **5s**: (empty)

**Questions:**

1. What is the symbol of element _____
   
2. Which is the highest excited state (A, B, C, or D) _____

**Explanation:**

Each diagram represents the electron configuration of an element in different states (ground state or excited states). The boxes represent orbitals, and the arrows represent electrons. Electrons in the same box with opposite arrows are paired, whereas single arrows indicate unpaired electrons. The ground state configuration has the lowest energy, and excited states have higher energy due to electron promotion to higher energy levels.
Transcribed Image Text:The valence shell electron configurations shown below correspond to different states for a neutral atom of a certain element. **(A)** - **4s**: ↑↓ - **4p**: ↑ ↑ ↑ - **5s**: (empty) **(B)** - **4s**: ↑↓ - **4p**: ↑↓ ↑ ↑ - **5s**: (empty) **(C)** - **4s**: ↑↓ - **4p**: (empty, empty, empty) - **5s**: (empty) **(D)** - **4s**: ↑↓ - **4p**: ↑↓ (empty, empty) - **5s**: (empty) **Questions:** 1. What is the symbol of element _____ 2. Which is the highest excited state (A, B, C, or D) _____ **Explanation:** Each diagram represents the electron configuration of an element in different states (ground state or excited states). The boxes represent orbitals, and the arrows represent electrons. Electrons in the same box with opposite arrows are paired, whereas single arrows indicate unpaired electrons. The ground state configuration has the lowest energy, and excited states have higher energy due to electron promotion to higher energy levels.
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