Question

At present how many elements are known?

Answer 1

1. A chemical element is a type of atom with a specific number of protons in its nucleus, including the pure substance made entirely of that type of atom.
2. There are $118$ elements in the periodic table in total. In $2016$, four of these were included in the list. These are Oganesson ($118$), Moskovi ($115$), Tennessine ($117$), and Nihonium ($113$).
3. The first $98$ element found in the periodic table's components are found naturally, but the other elements can only be found in nuclear accelerators and laboratories. $32$ of the $98$ elements are present in their purest form.
4. Eighty of the naturally occurring elements are stable, which means they cannot be subjected to radioactive decay.
5. Only traces of ten of the $98$ elements are known to survive.
6. Most periodic table elements with atomic numbers greater than lead are unstable and liable to radioactive decay.
7. Although several of the discovered elements exist naturally, only a few of these exist in their original form. The few include metals like copper, silver, and gold as well as noble gases that are difficult to combine into compounds.
8. The group of non-metals that occur in their natural form includes nitrogen, oxygen, and carbon.
9. Alkali and alkaline metals as well as rare earth elements are among the elements that don't exist in their natural state.
10. From left to right $118$ elements are arranged in order of increasing atomic number, along with their symbols and atomic numbers.

Therefore, at present there are $118$ elements are known.