The element 'I', representing Iodine, is located in Period 5 of the periodic table.
Understanding Periods in the Periodic Table
In chemistry, a period refers to a horizontal row in the periodic table. Elements within the same period have the same number of electron shells, which correspond to their principal quantum number. There are seven periods in the standard periodic table, with each period signifying a new principal energy level for the valence electrons of the elements it contains.
For more detailed information on periodic table periods, you can refer to the Period (periodic table) - Wikipedia article.
Location of Iodine (I)
Iodine (symbol: I) has an atomic number of 53. Its position in the periodic table confirms its placement in Period 5. The following table illustrates the positions of elements mentioned in association with Period 5, including Iodine:
| Property | Element 1 (Rubidium) | Element 2 (Iodine) |
|---|---|---|
| Atomic Number | 37 | 53 |
| Symbol | Rb | I |
| Period | 5 | 5 |
| Group | 1 | 17 |
As shown, Iodine (I) is found in Period 5 and belongs to Group 17, which is known as the halogens. This means that Iodine atoms have electrons occupying five electron shells.
Characteristics of Elements in Period 5
Period 5 is a robust section of the periodic table, containing 18 elements. These elements fill electrons into their 5s, 4d, and 5p subshells as their atomic number increases. Notable characteristics of elements found in Period 5 include:
- Diverse Element Types: It encompasses a wide range of elements, from highly reactive alkali metals (like Rubidium) and alkaline earth metals (like Strontium) to a full set of transition metals, and then post-transition metals, metalloids, halogens (like Iodine), and a noble gas (Xenon).
- Metallic Properties: The period begins with highly metallic elements and gradually transitions through less metallic and non-metallic elements as you move from left to right.
- Electron Configuration: Elements in Period 5 are characterized by having their outermost electrons in the fifth principal energy level.
Iodine, being in Period 5 and Group 17, exhibits properties typical of halogens, such as being highly reactive nonmetals, often found in diatomic molecules, and readily forming salts.
