of a noble gas, the atom of an element tries to gain or lose electrons. In order to achieve the most stable configuration i.e. The elements which are new are temporarily named according to their atomic numbers.

Sometimes, the elements are also named after the scientists or the geographical location where they were discovered. For example, the Latin name for gold is aurum. This is because the symbols of a few elements are derived from their Latin or Greek names. But we can also see that many of the symbols do not follow this pattern. We can see in the table above that most of the symbols are derived from the elements names, by taking the first or first two letters from the English name of the element. One may ask, How is the symbol of an element derived? We now know all the 118 elements and their symbols. 118 Element and their Symbols and Atomic Number (Table) Atomic Number The following table gives the list of 118 elements along with their symbols and atomic number. Without the symbols, it would have been a herculean task to represent all these 118 elements and the umpteen numbers of compounds they form. Chemical formulas and equations are also represented using those symbols. Symbols are most commonly used to represent elements in a periodic table. If the symbol for an element consists of only one letter, it is always written in uppercase. E.g.- Ca for Calcium, He for Helium, etc. The first letter of a symbol is always capitalized while the second (or third) letter is always written in lowercase. There are certain rules associated with writing a symbol. These are newly synthesized elements and they are temporarily named like that. 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.A symbol is a notation that generally comprises one or two letters that are used to represent a chemical element. 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. The table of elements shown here has 108 elements.

Periodic table pdf