The element Z=117 would be placed in which family of periodic table ?

Question

Accepted Answer

The element with atomic number Z=117 is known as Tennessine (Ts). It is placed in the halogen family of the periodic table. Here is a detailed explanation supporting why Option 2 is correct and why the other options are incorrect:

1. **Justification for Option 2 (Halogen family):**
   - The halogen family is located in Group 17 of the periodic table. This group includes elements such as fluorine, chlorine, bromine, iodine, and astatine. These elements are known for having seven valence electrons, which makes them highly reactive, particularly with alkali metals and alkaline earth metals, to form salts.
   - Tennessine, with an atomic number of 117, is placed in Group 17, aligning it with the halogens. Although it is a synthetic element and its properties are not fully known due to its instability and radioactivity, it is expected to share characteristics with other halogens based on its position in the periodic table.

2. **Explanation for why other options are incorrect:**
   - **Option 1 (Alkali metals):** Alkali metals are located in Group 1 of the periodic table. These elements, such as lithium, sodium, and potassium, have one valence electron and are highly reactive, especially with water. Tennessine does not belong to this group as it is in Group 17.
   - **Option 3 (Alkaline earth metals):** Alkaline earth metals are found in Group 2 of the periodic table. This group includes elements like beryllium, magnesium, and calcium, which have two valence electrons. Tennessine is not part of this group, as it is positioned in Group 17.
   - **Option 4 (Noble gases):** Noble gases are located in Group 18 of the periodic table. These elements, such as helium, neon, and argon, are characterized by having a full valence shell, making them very stable and mostly inert. Tennessine, being in Group 17, does not share these properties and is not a noble gas.

In conclusion, based on its position in the periodic table, Tennessine (Z=117) is correctly placed in the halogen family, supporting Option 2 as the correct answer.