Periodic Table · element

Radium

Ra · Z 88

atomic number

88

atomic mass

226

notation

Ra

group

2: Beryllium

period

7

state0c

Solid

state20c

Solid

occurrence

From Decay

density

5

melting pt

700

boiling pt

1737

discovered

1898

abundance

9e-07

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From the All Periodical Elements database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.