Question:
Which of the following does not belong to Group 16 elements?
Which of the following does not belong to Group 16 elements?
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Group 16 elements have 6 valence electrons \((ns^2 np^4)\), while Group 17 elements have 7 valence electrons \((ns^2 np^5)\). Chlorine is a halogen, not a chalcogen.
Updated On: May 19, 2026
- Oxygen
- Sulfur
- Selenium
- Chlorine
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The Correct Option is D
Solution and Explanation
Concept:
The periodic table is divided into groups where elements in the same group have similar properties due to the same number of valence electrons. Group 16 elements are known as the Chalcogens and have the general valence shell electronic configuration \( ns^2 np^4 \), meaning they contain six valence electrons.
Step 1: Identifying Group 16 elements.
Group 16 consists of:
• Oxygen (O)
• Sulfur (S)
• Selenium (Se)
• Tellurium (Te)
• Polonium (Po)
• Livermorium (Lv) From the given options, Oxygen, Sulfur, and Selenium belong to Group 16.
Step 2: Identifying Chlorine.
Chlorine (Cl), atomic number 17, has the electronic configuration \([Ne]\, 3s^2 3p^5\), indicating seven valence electrons. Therefore, it belongs to Group 17 (Halogens), not Group 16.
Step 3: Conclusion.
Since Chlorine belongs to Group 17, it does not belong to Group 16.
Step 1: Identifying Group 16 elements.
Group 16 consists of:
• Oxygen (O)
• Sulfur (S)
• Selenium (Se)
• Tellurium (Te)
• Polonium (Po)
• Livermorium (Lv) From the given options, Oxygen, Sulfur, and Selenium belong to Group 16.
Step 2: Identifying Chlorine.
Chlorine (Cl), atomic number 17, has the electronic configuration \([Ne]\, 3s^2 3p^5\), indicating seven valence electrons. Therefore, it belongs to Group 17 (Halogens), not Group 16.
Step 3: Conclusion.
Since Chlorine belongs to Group 17, it does not belong to Group 16.
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