Q. 15. What period are Actinides located in? 0 6 Di) 7 Do 4

The Actinides are a series of elements in the periodic table with atomic numbers from 89 to 103. They are located in the f-block of the periodic table, which is typically displayed as two separate rows at the bottom of the table. These elements are also known as the f-block elements.<br /><br />The Actinides are not located in a specific period like the other elements in the periodic table. Instead, they are a series of elements that span multiple periods. The first element in the Actinide series is actinium (Ac), which has an atomic number of 89 and is located in period 7 of the periodic table. The last element in the Actinide series is lawrencium (Lr), which has an atomic number of 103 and is also located in period 7.<br /><br />So, the correct answer is: Actinides are not located in a specific period, but they span multiple periods in the periodic table.