18 Questions
What is the purpose of IUPAC names for chemical elements?
To provide a unique identifier based on atomic number
Which element has the symbol 'Ubn' according to IUPAC nomenclature?
Element with atomic number 120
What does the principal quantum number (n) define in an atom?
The main energy level or shell
How are electrons distributed into orbitals in an atom?
Following specific rules based on subshells
What does an element's location in the Periodic Table reflect?
The quantum numbers of the last orbital filled
What does a period in the Periodic Table indicate?
The value of n for the outermost shell of elements in that row
Why do scientists require highly sophisticated costly equipment and laboratory to synthesize and characterize new elements?
To ensure reliable data collection and avoid false claims
What is the purpose of the systematic nomenclature recommended by IUPAC for new elements?
To provide a temporary name based on the atomic number
Why did both American and Soviet scientists claim credit for discovering element 104?
Due to the competitive spirit in laboratories
How did American scientists name element 104?
Rutherfordium
What is the significance of deriving a systematic nomenclature directly from the atomic number of a new element?
It helps in avoiding false claims of element discovery
What recommendation has the IUPAC made regarding the recognition of a new element's discovery and naming?
To use numerical roots for 0 and numbers 1-9 based on atomic number
What is the IUPAC name for the element with Atomic Number 107?
Ununseptium
How are the roots arranged in IUPAC nomenclature based on atomic numbers?
In increasing order
What is the IUPAC symbol for the element Nobelium?
No
How are temporary names and symbols for new elements determined?
Through a vote of IUPAC representatives from each country
What is the IUPAC name for the element with Atomic Number 116?
Ununseptium
How is Unnilhexium represented in terms of atomic number?
$101 + 106$
Study Notes
Element Names and Symbols
- Elements can be named after a country, state, or scientist.
- As of now, elements with atomic numbers up to 118 have been discovered and officially named by IUPAC.
IUPAC Nomenclature
- The IUPAC names for elements with Z above 100 are derived by combining roots for digits 0-9 and adding "lum" at the end.
- The roots for digits 0, 1, 2, and 0 are nil, un, bi, and nil, respectively.
- The symbol and name for the element with atomic number 120 would be Ubn and unbinilium, respectively.
Electronic Configurations and the Periodic Table
- An element's location in the Periodic Table reflects the quantum numbers of the last orbital filled.
- The period indicates the value of n for the outermost or valence shell.
- The distribution of electrons into orbitals of an atom is called its electronic configuration.
IUPAC Official Names
- The IUPAC official names for elements with atomic numbers above 100 are shown in Table 3.5.
- Examples of IUPAC official names include Unnilunium (101), Unbinilium (102), Untrinilium (103), and so on.
Classification of Elements and Periodicity in Properties
- New elements are first given a temporary name and symbol, and later, a permanent name and symbol are given by a vote of IUPAC representatives.
- The discovery of new elements requires highly sophisticated and costly equipment and laboratory facilities.
- The IUPAC recommends a systematic nomenclature for new elements until their discovery is proved and officially recognized.
Test your knowledge on the IUPAC names of elements with atomic numbers above 100. Match the correct names with the corresponding atomic numbers like Unnilunium for 101, Unnilbium for 102, and so forth.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
