Question

Chalcogen group elements are :

• A. Se, Tb and Pu.
• B. S, Te and Pm.
• C. Se, Te and Po.
• D. O, Ti and Po.

Hint:

It is very helpful to remember the names of important groups in the periodic table: Group 1 (Alkali Metals), Group 2 (Alkaline Earth Metals), Group 15 (Pnictogens), Group 16 (Chalcogens), Group 17 (Halogens), and Group 18 (Noble Gases).

Answer 1

The Correct Option is C

The question asks which of the provided groups belong to the chalcogen family. Chalcogens are the elements found in group 16 of the periodic table. These elements typically have six valence electrons and are known for forming compounds such as oxides, sulfides, selenides, etc. Let's analyze the elements in question:

1. Understanding the Chalcogen Group: The chalcogens are the elements in group 16 of the periodic table, which include:
   • Oxygen (O)
   • Sulfur (S)
   • Selenium (Se)
   • Tellurium (Te)
   • Polonium (Po)
2. Examining the Options:

   We need to determine which of the given options lists elements that are all chalcogens:

   • Option 1: Se, Tb, and Pu - Here, Se (Selenium) is a chalcogen, but Tb (Terbium) and Pu (Plutonium) are not.
   • Option 2: S, Te, and Pm - S (Sulfur) and Te (Tellurium) are chalcogens, but Pm (Promethium) is not.
   • Option 3: Se, Te, and Po - All elements, Se (Selenium), Te (Tellurium), and Po (Polonium), are chalcogens.
   • Option 4: O, Ti, and Po - O (Oxygen) and Po (Polonium) are chalcogens, but Ti (Titanium) is not.
3. Conclusion: Based on the analysis of the options, Option 3: Se, Te, and Po, all belong to the chalcogen group (group 16 of the periodic table).

Thus, the correct answer is Se, Te, and Po.