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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.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoUranium has the heaviest individual atoms. But when the atoms get together and
decide how much space each one gets, and we pick up a piece of the material that
results, osmium and iridium are tied for heaviest. Either one is about 71/2 times as
heavy as the same size piece of granite !
Wiki User
∙ 12y agoRadon
It is Uranium that is generally considered the heaviest naturally occurring element, though we have detected traces of plutonium in naturally occurring uranium.
Uranium's isotopes are uniformly unstable, and any of it decays with time. Additionally, one of the decay modes for this element is spontaneous fission. In spontaneous fission, an atom just "splits" and it produces a pair of fission fragments and one or more neutrons. Since this happens naturally, some neutrons are being released into the uranium, and uranium-238 can absorb a neutron to become plutonium. This accounts for the traces of plutonium in naturally occurring uranium, but only the smallest amounts of plutonium appear.
Radon may be a very heavy naturally occurring element but Uranium is still heavier. Also Radon is almost always found as a gas therefore it does not way anything.
Wiki User
∙ 13y agoThe heaviest natural element is Uranium(U). It has atomic weight 238.02891 dalton.
Wiki User
∙ 12y agoHydrogen is the smallest and lightest naturally occurring element.
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Which element is the heaviest actininde that occurs naturally on earth?
Uranium is the heaviest naturally occurring actinide.
What is the heaviest usable metal?
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).
What is the heaviest element?
What do you mean by "heaviest"? If you have a lot of feathers, it weighs more than a little bit of lead! There are two ways to answer this question. One is what is the element with the highest atomic weight, and what is the element with the highest density. The element with the highest atomic weight is the heaviest for the same number of atoms, and the most dense element is the heaviest element for the same volume of material.Uranium (U) (atomic number 92) is the naturally occurring element with the highest atomic weight. Plutonium might be argued to be the heaviest naturally occurring element, but it many scientists disregard this. A few atoms of plutonium have been detected in naturally occurring uranium, but the trace ammounts were formed by neutron capture where some neutrons released in the natural decay (spontaneous fission) of uranium were captured by some other uranium atoms and transmuted into plutonium.Ununoctium (Uuo) (atomic number 118) is the heaviest synthetic element, although only a couple of atoms have ever been made!The most dense element is osmium (Os), which a density of 22.61 grams per cm3 (which is 22.61 times more dense than water!) That's almost twice the density of lead!See the Related Question below for more information about the most dense elements.Natural, known or possible?Natural 92 Uranium Heaviest element of all those in the earth when it formed (~6 billion years ago) that has not decayed to practically undetectable levels due to a short halflife.Known 112 Copernicium This changes periodically but as of February 24, 2010 element 112 was the heaviest known.Possible ∞ "Infinitium" I see no theoretical reason limiting the heaviest element, only practical.
Is gallium a naturally occurring isotopes?
No. Gallium is an element. The element Gallium has two naturally occuring stable isotopes (69Ga and 71Ga) and abpout 29 unstable isotopes.
What is heaviest element on the periodic table of elements?
The heaviest element in the periodic table (known in March 2013) is ununoctium.
How many electrons does the heaviest naturally occurring element have?
The heaviest naturally occurring element is uranium, and it has 92 electrons.
Which element is the heaviest actininde that occurs naturally on earth?
Uranium is the heaviest naturally occurring actinide.
What is the heaviest element known to exist naturally on earth in quantities detectable by purely chemical test methods?
Now californium is considered as the heaviest naturally occurring chemical element.
What is the heaviest usable metal?
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).
Are there no new elements to be discovered?
No. Uranium is the heaviest naturally occurring element. More elements can be prepared artificially. New isotopes of the element may be discovered.
Which is the hevest element in the periodic table?
The heaviest (hevest?) naturally occurring element is Uranium (238 a.m.u.) but the heaviest known element is atom number 114, 117 or 118, the exact mass being unknown but over 250.
What is the heavist element in the periodic table?
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.
How many simple elements are there in the periodic table?
It depends on what you mean by 'simple'. If you mean naturally occurring then 92 as Plutonium-244 is the heaviest naturally occurring element. Any over this are synthetic. however i don't know what you mean by 'simple'
Worlds heviest man- made element?
This element is ununoctium - atomic number 118; uuo is an artificial element. I suppose that you think to atomic mass and not to density.
Who what is the heaviest of the naturally occurring noble gases?
Radon is the name of the heaviest noble gas.
What is the average of all the naturally occurring isotopes of a particular element?
The average of all the naturally occurring isotopes of a particular element are an element's atomic Mass.
Is xenon synthetic?
No, it is a naturally occurring element
