printable periodic table of elements pdf

We have excluded elements above 108 on this periodic table for the simple reason that the larger elements don’t really exist in the real world. Even with all of the periodic tables out there on the internet, we never found one that was quite what we were looking for in our classes so we made our own This table is made in Microsoft Powerpoint and is completely editable so it is easy to add or remove different features depending on the audience. You might find a table of elements showing element 115 or even 118 elements total. There is a Netflix documentary about this topic entitled Bob Lazar: Area 51 & Flying Saucers. The elements above 92 are strange, like for example element 115 that was reportedly found at Area 51. The parenthesis are a scientific way of saying this number is guesstimated, at best, and we really don’t know much about these elements because they are artificial and tend to disintegrate rapidly. You might note in the periodic table the mass numbers are in parenthesis for elements 93 and above. At least you won’t be finding any in this lifetime. As such, elements above 92 don’t really exist, except under special laboratory conditions. All elements above atomic number 92 are created artificially in laboratories, and generally they are extremely unstable and tend to disintegrate rapidly. As such, it’s highly unstable and unable to exist for very long. It is element 94, making it bigger than uranium. In 1940, a new element, plutonium, was created in a laboratory. Element 92 is uranium, the biggest element that occurs naturally on Earth. Before the year 1940, it was believed that only 92 elements existed. (See the original work of Dmitri Mendeleev here.) At that time, scientists were still discovering new elements almost every year. The original table of the elements, credited to Dmitri Mendeleev in 1871, had only 56 elements. Announcements of discoveries of elements 116 and 118 were made and later retracted.The table of elements shown here has 108 elements. Aluminum, cesium, and sulfur are the American spellings for aluminium, caesium, and sulphur. Roentgenium is sti l l the unofficial name of element 111 but it is the one recommended by the IUPAC so we list it here instead of the generic unununium. The most stable isotope appears have an atomic weight of 266 so we list that weight here. For example, some sources list the atomic weight of seaborgium as 263 and others 266. We have tried to l ist the most stable isotope. The difference arises from the differing atomic weights of various isotopes. Different sources list different atomic weights for elements. Notes: Elements with atomic weights in square brackets have no stable isotopes. Key element name atomic number symbol atomic weight Periodic Table of the Elements Alkali MetalsĪlkaline Earth Metals Transition Metals Other Metals Nonmetals Noble Gases Lanthanoids Actinoids

Printable periodic table of elements pdf