I think this is a trick question. The heaviest NATURAL element is Uranium (#92) but there are several heavier man-made ones. Every couple of years they are able to make another heavier one and IT becomes the heaviest. So I think the answer should be "there is no HEAVIEST element in the Periodic Table - it keeps changing."
If you are talking about element sin the periodic table, it is ununoctium(Uuo)
I believe it is Uranium. All elements heavier than uranium are man-made. Here's an interesting article... http://space.newscientist.com/article/dn13828-has-the-heaviest-element-been-found.html
Mercury is the heaviest element at a liquid state.
Plutonium (atomic number 94) is the last element in the periodic table that may be found naturally, in trace amounts.
Promethium is the element that is naturally found on Earth but is labeled as a laboratory-made element on the periodic table. Although traces of promethium have been found in uranium ores, it is primarily produced artificially through nuclear reactions.
I have just had to research this question for materials science homework.The answer that i have come up with is -Hydrogen is the lightest stable element with only one proton.Uranium is the heaviest with 92 protons. But scientist have discovered an eliment called eliment 118 that fits just below radon on the periodic table this eliment was supposed to have been discovered in 1999 but was said to have been made up. So i will go with uranium as being the heaviest known stable element for now.
The sixty first element in the periodic table of elements is promethium. It is a rare earth metal that is not found naturally on Earth and is typically produced in nuclear reactors.
The element with the highest atomic number on the periodic table is uranium. It has an atomic number of 92 and is a naturally occurring element found in small amounts in the Earth's crust.
The heaviest element announced in February 2004 was ununpentium with the atomic number 115.
The 107th element in the periodic table is Bohrium (Bh). It is a synthetic element, which means it is not found naturally and has to be created in a laboratory. Its atomic number is 107, and it is classified as a transition metal.
Mendelevium is an element on the periodic table with the atomic number 101. It belongs to the actinide series and is a synthetic element, meaning it is not found naturally but has to be produced in a laboratory. Mendelevium is named after Dmitri Mendeleev, the creator of the periodic table.
Copper occurs naturally as both an element and in various compounds. In its pure form, copper is an element on the periodic table with the symbol Cu. However, it can also be found in nature as compounds such as copper oxide and copper sulfide.