Which of the following elements is a member of Chalcogens?

Question

Accepted Answer

Option 1, Se (Selenium), is the correct answer because it is a member of the Chalcogens group in the periodic table. The Chalcogens are the elements found in Group 16, which includes Oxygen (O), Sulfur (S), Selenium (Se), Tellurium (Te), and Polonium (Po). These elements are known for their ability to form compounds with metals and nonmetals, often resulting in the formation of oxides and sulfides. Selenium, being part of this group, shares similar chemical properties and is thus classified as a Chalcogen.

Now, let's explain why the other options are incorrect:

2. Br (Bromine) - Bromine is not a Chalcogen; it belongs to the Halogens group, which is Group 17 of the periodic table. Halogens are known for their high reactivity and tendency to form salts with metals. Bromine, being a Halogen, does not share the same group characteristics as the Chalcogens.

3. As (Arsenic) - Arsenic is part of the Nitrogen group, also known as the Pnictogens, which is Group 15 of the periodic table. This group includes elements like Nitrogen (N), Phosphorus (P), and Antimony (Sb). Arsenic's chemical behavior and properties align with the Pnictogens, not the Chalcogens.

4. Ge (Germanium) - Germanium is a member of the Carbon group, or Group 14, which includes elements like Carbon (C), Silicon (Si), and Tin (Sn). Germanium is a metalloid and shares properties with other elements in its group, but it is not part of the Chalcogens.

In conclusion, Option 1 (Se) is the correct answer because Selenium is a member of the Chalcogens group, while the other elements belong to different groups with distinct chemical properties.