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Periodic Table Poem(elements for sale!!!)
Gold! Neon! Elements!
What is the periodic table of elements?
The periodic table lists all of the known elements (currently 118).
It was created by Russian chemist Dmitri Mendeleev in 1869.
The elements are arranged in order of atomic number, which is the number of protons in the element's nucleus.
Columns on the periodic table are known as groups and separate elements with similar properties: noble gases, halogens, alkali metals, alkali earths.
Rows of the periodic table are known as periods and also can be useful in grouping the elements they contain.