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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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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.


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 families have no radioactive elements?

Radioactive elements exist in all groups of the periodic table.


What element family have no radioactive elements?

Radioactive elements exist in all groups of the periodic table.


How many elements are not yet discovered?

As of now, there are 118 confirmed elements on the periodic table, with the heaviest being oganesson (Og). While scientists continue to explore the possibility of discovering new elements, particularly those beyond element 118, it is uncertain how many undiscovered elements remain, as they would require advanced technology and conditions to synthesize. Theoretical predictions suggest that elements may exist beyond the current periodic table, but their stability and properties are largely unknown.


What would happen if uranium ore didn't exist?

If uranium ore didn't exist, we would not have access to uranium as a fuel source for nuclear power plants. This could potentially impact our ability to generate electricity from nuclear energy, leading to increased reliance on other forms of energy production. Additionally, uranium is used in some medical applications and in military settings, so its absence could also impact these areas.


Are there 1000 different elements in the existence?

There are more than 1000 known chemical elements, including the periodic table elements, isotopes, and synthetic elements created in labs. In terms of the diversity of elements in the universe, there are countless variations arising from different combinations and arrangements of these elements.


Where is promethium on the periodic table of elements?

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What number is mathane on the periodic table?

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Are most of the periodic table isotopes?

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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.


What are the new elements since john newland time?

Since John Newland's time in the 1860s, numerous new elements have been discovered and added to the periodic table. Notably, elements such as francium, promethium, and the transuranium elements (those beyond uranium) have been identified, expanding the known total to 118 elements. Advances in nuclear chemistry and physics have also led to the synthesis of superheavy elements, which are often highly unstable and exist only for brief moments. Additionally, the understanding of atomic structure and electron configurations has significantly evolved, refining how elements are categorized and related to one another.