All Acronyms. CTA - Control Terminal Agency [Internet]; April 13, 2017 [cited 2017 APR 13]. Available from: https://www.allacronyms.com/CTA/Control_Terminal_Agency.
There are almost 120 known elements. For example, you are made up of billions of billions of atoms but you probably won't find more than 40 elements (types of atoms) in your body. Chemists have learned that over 95% of your body is made up of hydrogen (H), carbon (C), nitrogen, oxygen, phosphorus (P), and calcium (Ca).
Updated March 14, 2017. There are 118 different elements currently on the periodic table. Several elements have only been found in laboratories and nuclear accelerators. So, you may wonder how many elements can be found naturally. The usual textbook answer is 91. Scientists used to believe that, with the exception of the element technetium, all the elements up to element 92 could be found in nature.