Are there some elements on the periodic table that hasn't been discovered?

No, we've found every naturally made element. There are currently only 92 naturally made elements on the periodic table. All the elements with more than 92 protons are synthetic. There are new elements that can be added to the periodic table. But these elements are man-made. There are no more elements to be discovered.

Bis the answerhope it !

Hello.the answer is  hydrosphere, geosphere, and biosphere  have a nice day