Wagner Perez
Chemistry 4th period
Artificial Elements
A chemical element is a uncorrupted chemical substance containing of one type of atom well-known by its atomic number, which is the number of protons in its nucleus. Elements are divided into metals, metalloids, and non-metals.
In chemistry, a artificial element is a chemical element that does not happen naturally on planet Earth, and therefore only be created artificially. As of the year 2012, we have only created exactly 20 artificial elements, these are those with the atomic numbers of 99-118. With a life ranging from as much of one year up to a few milliseconds all artificial elements are unstable.
Nine other elements were first created artificially and later considered synthetic, but later, these nine elements were discovered to exist naturally in trace amounts. For example, plutonium was first manufactured in the year 1940. One of the best known artificial elements is laypeople. It is so known because if its use in atomic bombs and other nuclear reactors.
The following elements do not occur naturally on Earth. All are transuranium elements and have atomic numbers of 99 and higher. Their position on the periodic table is also shown below.
Element name
Chemical
Symbol
Atomic
Number
First definite
synthesis
Einsteinium
Es
99
1952
Fermium
Fm
100
1952
Mendelevium
Md
101
1955
Nobelium
No
102
1966
Lawrencium
Lr
103
1961
Rutherfordium
Rf
104
1966 (USSR), 1969 (USA) *
Dubnium
Db
105
1968 (USSR), 1970 (USA) *
Seaborgium
Sg
106
1974
Bohrium
Bh
107
1981
Hassium
Hs
108
1984
Meitnerium
Mt
109
1982
Darmstadtium
Ds
110
1994
Roentgenium
Rg
111
1994
Copernicium
Cn
112
1996
Ununtrium
Uut
113
2003
Flerovium
Fl
114
1999
Ununpentium
Uup
115
2003
Livermorium
Lv
116
2000
Ununseptium
Uus
117
2010
Ununoctium
Uuo
118
2002
There are a few ways in which synthetic elements can be...