no.
all elements discovered (and proposed) are included in the Periodic Table
You think probable to isotopes; but the most important isotope of artificial radioactive elements is included in the periodic table.
There are 117 elements on the periodic table, however, there is one blank spot that lies on the periodic table of elements, it has the atomic number of 117. If it were discovered, there would be 118 elements on the periodic table of elements.
Not all the elements were included
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
Some important questions to ask about the periodic table include: What is the organization of elements based on? How are elements grouped together? What are the properties of elements in the same group or period? How does the periodic table help predict the behavior of elements?
It is called the Periodic Table of Elements.
112 elements are known, with the existence of addition 6 elements being tentatively proposed.
Dmitri Mendeleev compiled all known elements in a table. Not satisfied, he researched more elements from various scientists and included it in his table.
There are far to many elements following the 6th on in the Periodic Table. Included below is a link to a very nice Periodic table.
There are 53 Elements in the Periodic Table.
Elements of the Periodic Table
Water isn't an element. It is made up of Hydrogen and Oxygen, both of which are elements and appear on the periodic table.