Today (July 2013) 118 chemical elements are known.
there are 118 elements as we know right now
Now are known 118 chemical elements.
Now (2013) are considered as natural chemical elements 97 elements (including berkelium).
118 chemical elements are now in the periodic table.
117(now who knows how many in 3000) {112}
Now (22.08.2012) 118 chemical elements are known.
Now are known 118 chemical elements (natural or artificial) with more than 3 100 isotopes.
10
There are currently 38 radioactive elements that have been discovered. These elements have unstable nuclei that undergo radioactive decay, emitting radiation in the form of alpha particles, beta particles, or gamma rays.
There are 119 currently known elements. 98 of them occur naturally, with the remainder created in particle accelerators or during nuclear reactions.
There are many more elements than just 91. There are in fact 114 officially recognised elements. All these elements are arranged on the Periodic Table of the Elements.
Now there are 118 elements. But you never know if they discover a new one tomorrow.