f- orbital

[Brianna Brockman 1F]

So on the periodic table, the s-, p-, and d- orbitals all correspond with a block of the periodic table. But I've noticed that some random elements use the f- orbital and I can't seem to figure out what the telltale sign is that they do. What block/part of the periodic table corresponds to the f- orbital?

[Minsub Lee 3E]

The last two rows of the periodic table consist of the f-orbitals. By looking at the atomic number of those elements, you can see that they fit in the middle of the periodic table. It is the row after Xe

[Kobe_Wright]

Observe the atom numbers of the elements in the f block,notice where they fit in with the rest of the table, everything with atomic numbers above 58 will have electrons in the f block.

[Brandon Sanchez 3J]

The f-orbital consists of the two rows that are outside the periodic table that start at atomic # 57-71 and 89-103.