Animated Solution for Chemistry - Periodicity in Properties: The IUPAC symbol for the element with atomic number 119 would be

Have you ever wondered what happens when scientists discover a new element, but haven't quite decided what to name it yet? Or what about elements that we know should exist theoretically, but haven't even been created in a lab yet?

This is exactly where the IUPAC (International Union of Pure and Applied Chemistry) systematic nomenclature comes to the rescue. It provides a temporary, logical naming system for all elements with an atomic number ($Z$) greater than $100$.

The rule is beautifully simple. You take the atomic number, break it down into its individual digits, and assign a specific Latin or Greek root to each digit.

Here is the master key for the digits: $0=\text{nil (n)}$ $1=\text{un (u)}$ $2=\text{bi (b)}$ $3=\text{tri (t)}$ $4=\text{quad (q)}$ $5=\text{pent (p)}$ $6=\text{hex (h)}$ $7=\text{sept (s)}$ $8=\text{oct (o)}$ $9=\text{enn (e)}$

Let's apply this to our target element with atomic number $119$.

1. The First Digit ($1$): The root for $1$ is 'un'. The first letter of our symbol will be 'u'. 2. The Second Digit ($1$): The root for the second $1$ is again 'un'. The second letter of our symbol is another 'u'. 3. The Third Digit ($9$): The root for $9$ is 'enn'. The third letter of our symbol is 'e'.

When we string these letters together, we get the symbol uue.

To get the full name of the element, we string the roots together and add the suffix '-ium' at the end.

Element $119$, Ununennium, is a fascinating subject. As of now, it has not yet been synthesized. The current periodic table ends at element $118$, Oganesson, which perfectly completes the $7^{\text{th}}$ period.

When Ununennium is finally created, it will be a historic moment. It will be the very first element of the $8^{\text{th}}$ period! Based on periodic trends, it will be placed in Group 1, making it an s-block element and a highly reactive alkali metal, sitting right below Francium.