Nomenclature – elements

Nomenclature - elements

source : ncert/cbse notes -weebly

Nomenclature – elements

The IUPAC proposed a system of naming  elements with atomic number more than 100.

1)  The names should be short and  related to the atomic numbers of the elements.

2) The names are derived by using roots for the three digits in the atomic number of the element . The names should end in ‘ium’ whether the element was expected to be a metal or otherwise.

The roots for the numbers are-

0 -nil , 1 – un , 2 – bi , 3 – tri , 4 – quad , 5 – pent , 6 – hex , 7 – sept , 8- oct , 9 – enn.

source : cbsenotes.weebly.com

3) The symbols for the elements is made up from the first letters from the roots which make up the name.

The names are written as a complete word in the examples a hyphen is inserted between  each part of the name for  clarity. They should be omitted.

101   un-nil-unium    (Unu)

102   un-nil-bium     (Unb)

103   un-nil-trium    (Unt)

104   un-nil-quadium (Unq)

105   un-nil-pentium   (Unp)

106   un-nil-hexium    (Unh)

107   un-nil-septium    (Uns)

108   un-nil-octium    (Uno)

109   un-nil-ennium   (Une)

110   un-un – nilium  (Uun)

110   un-un – nilium   (Uun)

111   un-un – unium   (Uuu)

112   un-un – bium   (Uub)

113   un-un – trium   (Uut)

114   un-un – quadium (Uuq)

115  un-un – pentium  (Uup)

116  un-un – hexium    (Uuh)

117  un-un – septium   (Uus)

118  un-un – octium  (Uu0)

119  un-un – ennium (Uue)

120  un-bi – nilium  (Ubn)

source: De Gruyter