55
About 112
118 atoms/elements.
4000
117 elements
112 elements have been named and additional 6 elements have been tentatively proposed.
the total number of elemetns humanly known is 118
Only 13
About 112
118
Because seawater is made up of many elements that can be seperated.
Thus far (2012) there have been 118 unique elements identified, the most recent being Ununoctium, discovered in 2003. >> Ununoctium: symbol Uuo, at. no. 118, at. wt. 294 ... it's man made and Radioactive.
92 atoms have been identified, i think(:
There are many elements that are contained in seawater. Some examples include magnesium, sulfur, selenium, silicon, fluorine, sodium, and chlorine.
There are only 117 out of 118 elements on the Periodic Table that have been identified by research groups. Only 112 of the 117 have been recognized by the IUPAC. So, technically, there are 118 elements.
118 atoms/elements.
4000
-thousands