This element is ununoctium - atomic number 118; uuo is an artificial element.
I suppose that you think to Atomic Mass and not to density.
The heaviest element with a one letter atomic symbol is uranium (symbol: U).
The lightest alkaline earth metal is Beryllium(Be) having atomic mass 9.012 dalton. The heaviest element in this family is radium.
The heaviest natural radioactive element is Uranium.Man made elements are continuously being made. The latest heaviest superheavyweight man made element to be discovered is element 117 (it is still so new that it hasn't been given a name yet).A little different bit of information about Fermium, a team has captured a piece of its spectrum-the wavelengths of light it absorbs-making it the heaviest element ever to be so measured. It was made in the 1952 detonation of the first thermonuclear bomb. It does not make it as the heaviest element, just the heaviest to have it's light spectrum captured.
If we are talking about elements here, hydrogen is not the heaviest. In fact, hydrogen is the lightest element. There are two ways of answering this question, depending on how you define 'heaviest'. The heaviest element in terms of heaviest per a given number of atoms is the element with the highest atomic weight. This is the element with the largest number of protons, which is presently element 118, ununoctium. When a heavier element is discovered (e.g., element 120), then that will become the new heaviest element. Ununoctium is the heaviest element, but it is man-made. The heaviest naturally-occurring element is uranium (atomic number 92, atomic weight 238.0289). Another way to look at heaviness is in terms of density, which is mass per unit volume. Either of two elements can be considered the element with the highest density: osmium and iridium. The density of the element depends on many factors, so there isn't a single number for density that would allow us to identify one element or the other as the most dense. Each of these elements weigh approximately twice as much as lead. The calculated density of osmium is 22.61 g/cm3 and the calculated density of iridium is 22.65 g/cm3, though the density of iridium has not been experimentally measured to exceed that of osmium.
Uranium is the heaviest actinide element that occurs naturally on Earth.
The heaviest alkaline-earth metal is radium. Radium is a highly radioactive element and is the heaviest and most unstable of the alkaline-earth metals.
Uranium
URANIUM (:
The heaviest naturally occurring actinide on Earth is uranium, specifically uranium-238.
Now californium is considered as the heaviest naturally occurring chemical element.
The heaviest naturally occurring element on Earth is uranium, with an atomic number of 92. However, heavier synthetic elements have been created in laboratories, such as element 118, oganesson.
Mercury is the heaviest element at a liquid state.
The heaviest naturally occurring element on the periodic table of elements is uranium. However, if we consider all elements (including synthetic ones), the heaviest would be oganesson.
The heaviest element that is highly radioactive is Ununoctium, which has an atomic number of 118.
The information in the question 'What is the heaviest element?' should answer this. Access this by the web link below.
Heaviest Corner on Earth was created in 1906.
The heaviest element announced in February 2004 was ununpentium with the atomic number 115.