The decision to add to the periodic table was taken unanimously by all leading real scientists across the globe. The details are as follows:
Atomic weight: Don't even dare to ask!
1. Boils at any time,
2. Melts when handled with love and care,
3. Very bitter when mishandled.
1. Very reactive,
2. Highly unstable,
3. Possesses high affinity to gold, platinum, diamond, branded clothes and other expensive items.
1. Money reducing agent.
2. Volatile when left alone.
Mostly found in front of the mirrors.
P.S. Not everything mentioned above is fictional and/or imaginary except the fact that no new element was added to the periodic table.