Periodic Table · element

Rubidium

Rb · Z 37

atomic number

37

atomic mass

85.468

notation

Rb

group

1: Lithium

period

5

state0c

Solid

state20c

Solid

occurrence

Primordial

density

1.532

melting pt

39.3

boiling pt

688

discovered

1861

abundance

90

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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.