To determine which element is in the same period as chlorine (Cl), we need to refer to the periodic table and identify the periods in which each of the given elements is located. A period in the periodic table is a horizontal row.
1. Chlorine (Cl): Chlorine is located in period 3 of the periodic table.
2. Iodine (I): Iodine is located in period 5.
3. Mercury (Hg): Mercury is located in period 6.
4. Tin (Sn): Tin is located in period 5.
5. Phosphorous (P): Phosphorous is located in period 3.
Now, we compare the periods of the elements with that of chlorine.
- Iodine (I) is in period 5, which is different from chlorine's period.
- Mercury (Hg) is in period 6, which is different from chlorine's period.
- Tin (Sn) is in period 5, which is different from chlorine's period.
- Phosphorous (P) is in period 3, which is the same as chlorine's period.
Based on this information, the element that is in the same period as chlorine (Cl) is phosphorous (P).
