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Are there any elements with no stable forms?
Many of the elements with higher atomic numbers have no stable form yet discovered, ex: ununoctium.
What did the gaps on Mendeleev's tabel represent?
He predicted that elements with the predicted properties would be discovered to fill in these gaps.
Did Mendeleev leave gaps in the table for undiscovered elements?
he predicted that there were elements not yet discovered so yeah.
What led Mendeleev to predict that some elements had not yet been discovered?
the large gaps
How did mendeleev list the elements in his table?
He listed the elements in his periodic table in groups in which he saw patterns. He left gaps where he thought elements had not yet discovered. Hope this helps :p
How many blank spaces did Mendeleev leave in the periodic table which represented elements that had not yet been discovered?
Mendeleev left 3 blank spaces for the elements that had not yet been discovered.
How many elements in the periodic table that are to be discovered?
If they are not discovered yet how would we know how many? Also, your question is phrased poorly.
Are there any elements with no stable forms?
Many of the elements with higher atomic numbers have no stable form yet discovered, ex: ununoctium.
What do you call elements that react?
not been discovered yet
What did the gaps on Mendeleev's tabel represent?
He predicted that elements with the predicted properties would be discovered to fill in these gaps.
What are the periods in Mendeleev's periodic table?
Because some of the elements were not yet discovered so he left them blank for other elements to be discovered. -bobby corner
Are most elements not metal?
No, 91 of the 118 known elements are metals. There may be more metals not discovered yet.
Did Mendeleev leave gaps in the table for undiscovered elements?
he predicted that there were elements not yet discovered so yeah.
How many elements are currently in the periodic table?
there are about 125 or120 and some haven't even been discovered yet. so there's a good number of elements in the periodic table
Many of the first discovered elements were named by?
many of the first discovered elements were named by greek and roman philosophers
How many radioactive elements are discovered uptill now?
40 elements are discovered uptil now
What group of elements did Mendeleev omit?
i have no idea but i will check and keep you posted.
