Classification of Elements and Periodicity in Properties - Nomenclature of Elements with Atomic Number greater than 100
Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
The IUPAC systematic nomenclature is used for elements with atomic number until their discovery is confirmed and a permanent name is assigned.
The name is derived directly from the atomic number digits using specific numerical roots: , , , , , , , , , and .
To form the complete name, the roots are put together in order of the digits and the suffix is added at the end.
If the final root ends in '' (like or ) and is followed by the suffix , one '' is omitted to avoid double '' (e.g., instead of ).
If the root is followed by (as in atomic number ), the '' is dropped (e.g., instead of ).
The chemical symbol is derived by taking the first letter of each numerical root and capitalizing the first letter (e.g., for , the symbol is ).
📐Formulae
💡Examples
Problem 1:
What is the IUPAC name and symbol for the element with atomic number ?
Solution:
The name is Unbinilium and the symbol is .
Explanation:
For : Digit is , digit is , and digit is . Combining these with the suffix gives . The symbol is formed from the first letters: .
Problem 2:
Determine the systematic name for an element with .
Solution:
Unnilennium
Explanation:
Digit , , . Combining them: . The symbol is .
Problem 3:
Write the IUPAC name for and explain the spelling rule applied.
Solution:
Unnilbium
Explanation:
Digit , , . Normally, it would be . However, according to the IUPAC rule, since the root 'bi' ends in '', we drop one '' before adding 'ium'. Thus, it is written as Unnilbium (Symbol: ).