Placeholderium


 * NOTE: Placeholderium is not a tool to artificially inflate the element count.

This a hypothetical element with atomic number is for placeholders (Elements that have not been discovered yet, but are in the table anyway becuase we are too lazy to add colspans). In the periodic table, they are shown with a and its respective symbol. They are meant as temporary elements, for when they are discovered later on.

2019
User BSMMedia used placeholders(as separate pages) for the elements before Brexitium. They were replaced over the course of the year.

2020
User MrKathooloo created 3 new elements starting from atomic number 905 from 28–29 February. User BSMMedia created this page for the elements in between.

User Eshaan011 created 1 element between Negamumbaia and Negaobamion. It was labelled "-9" on the negative periodic table. It later became Myfirstnegativeelementium. He wanted the negative periodic table to expand quickly.

User Eshaan011 placed many placeholders in period -3.One of them has already gotten replaced by JulianGutierrez2008 as NegaTFEeem.

User User:Eshaan011 placed placeholders through the entire period -4.

On 22 December 2020, the first positive placeholderium era ended as Nomoreplaceholderium was created. Negative placeholderium was removed on 24 December.

2021
On 16 January 2021, the second placeholderium era began as created element 2600 when the last element was 2590. It ended on 20 January. A third placeholderium era began on 25 January and ended on the 31st. On Febuary 13, the fourth placeholderium era began, filling up the EH block on period -10, going from NonegativeG2blockium to Negabihexnillium. The first element that popped up was Notarickrollium, then Hafhunasaium, followed 10 seconds later by Nega🅱enium, which User:Kepler-1229b discovered. Now, there are a lot of placeholders in the negative elements and a few of them in the positive elements.There is also some in the complex. The fifth placeholderium era began as User:Kepler-1229b placed placeholders after Ff-mewium. The sixth placeholderium era began as User:Delrosev2029 made places for placeholderium in the AAE (AntiAtomicElements) and in the 180 Elements.