Actinium (Ac)

Element

SymbolAc

Actinium is chemical element number 89, with the symbol Ac. It is an actinide and a solid at room temperature. Its atomic mass is about 227, and it sits in period 7 and group 3 of the periodic table.

In Minecraft Education, a player makes actinium in the Element Constructor by setting the number of protons to 89.

Contents (3)

Data
How to make it
Nearby elements

Data

Atomic number	89
In-game identifier	`minecraft:element_89`
Numeric id	355
Chemical symbol	Ac
Atomic mass	227
Category	Actinide
Phase at room temperature	Solid
Group	3
Period	7

How to make it

Place an Element Constructor, then set the protons to 89. The number of protons is what decides which element you get; neutrons and electrons change it into an isotope or an ion of the same element.

Nearby elements

← RadiumThorium →

Read from Mojang’s own Bedrock sample packs. Element names and atomic data come from the standard periodic table, not from the game files — Minecraft Education numbers its elements but does not ship their names. 9Minecraft is not affiliated with Mojang or Microsoft.