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All the elements after uranium exist but excepting neptunium and plutonium (present in the earth crust only in ultratrace concentrations) they are man made.
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∙ 14y ago
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What would happen if uranium ore didn't exist?
There would be another hole in the periodic table of the elements...
Why does the uranium does not react with atom in mountains where it is found?
Uranium don't exist as a pure metal in ores; uranium react with many other elements.
What families have no radioactive elements?
Radioactive elements exist in all groups of the periodic table.
How many elements are found in the periodic table of elements?
There are a total of 118 elements known to exist on the periodic table.
What element family have no radioactive elements?
Radioactive elements exist in all groups of the periodic table.
Where is promethium on the periodic table of elements?
Promethium exist in nature only in traces; it is supposed that the Earth crust contain less than 1 kg promethium.
Why scientists believe no elements are missing in the periodic table?
The periodic table contains all the known elements. Scientists have spent decades looking for new elements and, so far, haven't found any beyond what are on the periodic table as it stands now.
What number is mathane on the periodic table?
First of all it is a compound made of different elements, hence it cannot exist in periodic table. Periodic table is composed only of pure elements not in any combined form.
What is a colunm in the periodic table?
In the Periodic Table of the Elements, a column (group) contains all elements that exist with the group number of electrons in the outer energy level of an atom of that element.
Are most of the periodic table isotopes?
No most of them are not isotopes. Few elements exist as isotopes.
Why do individual isotopes not appear on the periodic table?
In the periodic table only the chemical elements appear; but tables for isotopes also exist.
A verticle column in the periodic table?
In the Periodic Table of the Elements, a column (group) contains all elements that exist with the group number of electrons in the outer energy level of an atom of that element.
