How Many Elements In Periodic Table 2024 Wikipedia. And the second long period, from rubidium, 37, to xenon, 54. Back in january, officials announced that four new elements had earned a permanent spot on the periodic table, with elements 113, 115, 117, and 118 rounding out the seventh row.
The international union of pure and applied chemistry has approved the name and symbols for four elements: And the second long period, from rubidium, 37, to xenon, 54.