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The Periodic Table is complete for all known elements and has no gaps that could be filled with unknown elements.
However the periodic table is inherently open ended, additional radioactive elements can in principle always be added beyond the most massive known element if we create them in particle accelerators (such elements may have also been created in the initial moments of supernova explosions). However all of these new elements are very difficult to create and even more difficult to detect and verify once created as they decay back to known lighter elements almost instantly.
What else can I help you with?
What complete family of chemical did mendeleev leave out of his periodic table?
Mendeleev left out the noble gases (Group 18) from his periodic table because they were not discovered yet at the time he developed the table. These elements were later added to the periodic table as they were discovered.
What is the name of the table of elements?
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
Which group has a complete outermost shell in a periodic table?
group 18, noble gases
Is helium considered a complete atom with the least reactivity of the elements on the periodic table?
Yes, helium is a noble gas and has a complete outer shell of electrons, making it very stable and therefore the least reactive of all the elements on the periodic table.
Why do most of the elements on a periodic table like to form bonds with other elements?
To complete their octet
Where is a complete periodic table?
A complete periodic table arranged in periods and groups. The symbol of element and atomic number are mentioned.
Is the Periodic table of the Elements complete?
yea why
Did the noble gases complete the periodic table?
yes it did
What complete family of chemical did mendeleev leave out of his periodic table?
Mendeleev left out the noble gases (Group 18) from his periodic table because they were not discovered yet at the time he developed the table. These elements were later added to the periodic table as they were discovered.
What is the name of the table of elements?
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
When was the periodic table finished?
The periodic table was considered complete in 1869 when Dmitri Mendeleev published his version of the periodic table which arranged elements by atomic weight and properties. However, the table has been updated and refined over time to include new elements and conform to our modern understanding of atomic structure.
Complete date of the creation of mendeleev's periodic table?
i think in 1860's or something
Is helium considered a complete atom with the least reacctivity of the elements on the periodic table?
TRUE
Which group has a complete outermost shell in a periodic table?
group 18, noble gases
Is helium considered a complete atom with the least reactivity of the elements on the periodic table?
Yes, helium is a noble gas and has a complete outer shell of electrons, making it very stable and therefore the least reactive of all the elements on the periodic table.
What is a group in a periodic table.?
A group in Periodic Table is the column of element in periodic table
What is a chart that lists all the known elements?
It is called the Periodic Table of Elements.
