Now (January 2013) 97 chemical elements are considered as natural and 21 as man made.
Man-made elements are made in a particle accelerator.
It was Plato who thought the elements in the physical world such as a desk, a man, and a dog, were imperfections or shadows of the eternal, perfect ideas of a desk, a man, and a dog. Plato was a Greek philosopher.
At present there are more than 50 elements in the world. There are 92 natural and 115 total when we add the synthetic elements.
112 Elements ( 92 Natural and 20 Man-made ) .
Transuranium Elements
Yes, they are true chemical elements but man made.
Examples of man made elements: curium, californium, bohrium, mendelevium, nobelium etc.
The 26 transuranic elements (elements with atomic numbers higher than 92) are man-made. Some lists also count technetium (element 43) as man-made as well. --------------- Now (January 2013) 97 chemical elements are considered as natural and 21 as man made.
elements chart
The 5 man made elements of light is xenon,krypton,argon,neon,and helium.
All the existing elements are natural the man made elements are rare and have a very short life.
Out of the 112 elements known, 90 are found in nature and the rest (22 are man made).