Explain : Nomenclature for the elements with atomic number greater than 100.
Answers
Answer:
The chemical element with the atomic number above 100 also referred to as superheavy elements. The Commission mentions the use of three-letter structures for the chemical elements with Z=100 or above it.
Nomenclature for the elements with atomic number greater than 100 :
The IUPAC (1997), proposes a system for naming elements with atomic numbers (Z) greater than 100.
The important points of the nomenclature of the elements are :
(1) The names are derived by using the numerical roots for three digits in the atomic number of the element and adding ''ium''.
The roots for the numbers are as follows:
0 - Nil
1 - un
2 - bi
3 - tri
4 - quad
5 - Pent
6 - hex
7 - sept
8 - Oct
9 - enn
(2) In certain cases the names are shortened.
For example, ''biium'' and ''triium'' are shortened to 'bium'' and ''trium'' and ''ennil'' is shortened to ''enil''.
(3) The symbols for element are made up from the first letters from the roots which make up the names. The mixture of Latin and Greek roots have been chosen to ensure that the symbols are all different.
IUPAC [International Union of Pure and Applied Chemistry] nomenclatures for the super heavy elements are as follows:
At no: Roots: Nomenclature: Symbol:
101 Un + nil + un + ium Unnilunium Unu
102 Un + nil + bi + ium Unnilbium Unb
103 Un + nil + tri + ium Unniltrium Unt
104 Un + nul + quad + ium Unnilquadium Unq
etc..