Answer: At present time, man is aware of 118 elements. In other words, man has constructed an atom with 118 protons, 118 neutrons, and 118 electrons. Like other synthetic elements, this fell apart as soon as it was made. Only roughly 91 naturally occurring and semi-stable elements exist; the remaining 27 are based on scientific evidence.
Previously, we had 115 elements; however, four more elements have recently been discovered.
Ununseptium and ununtrium are two working names for them. According to the International Union of Pure and Applied Chemistry, the elements with atomic numbers 113, 115, 117, and 118 will be given permanent names soon.