If look at the table of elements, you should see how many elements we know. So there's 90 natural elements [11 gas (red fill), 2 liquid (blue fill) and 77 solid (black fill)] and 28 artificial elements [outlined].
it should be noted that all of the 13 synthetically created elements are radioavtive (unstable). it seems for all of humananies genius, we just can't outwit the inner workings of a star.