it is the cycle of stellar evolution
The heaviest stable element is bismuth, atomic number 83, atomic weight 208.9804). Any heavier element is radioactive, which means it decays into lighter elements - uranium, the heaviest naturally occurring element, will eventually decay into lead-207.
The heaviest element announced in February 2004 was ununpentium with the atomic number 115.
Now californium is considered as the heaviest naturally occurring chemical element.
hydrogen
The heaviest element in group 16 is Polonium. It has an atomic number of 84 and is a rare, highly radioactive metal.
Mercury is the heaviest element at a liquid state.
Bismuth (Bi) is the heaviest nonradioactive element but the next heaviest is Lead (Pb) and that is much more commonly used. The heaviest element that is naturally occurring, and also usable, though radioactive, is Uranium (U).
The heaviest element that is highly radioactive is Ununoctium, which has an atomic number of 118.
The heaviest element in the periodic table (known in March 2013) is ununoctium.
The heaviest stable element is bismuth, atomic number 83, atomic weight 208.9804). Any heavier element is radioactive, which means it decays into lighter elements - uranium, the heaviest naturally occurring element, will eventually decay into lead-207.
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The heaviest element announced in February 2004 was ununpentium with the atomic number 115.
Granite.
Now californium is considered as the heaviest naturally occurring chemical element.
The heaviest element with a one letter atomic symbol is uranium (symbol: U).
This element is francium.
The heaviest man-made element is Oganesson (Og), with an atomic number of 118. It is a synthetic element that was first synthesized in 2002 by Russian and American scientists. Oganesson is highly unstable and has a very short half-life, making it difficult to study.