Periodic Table · element

Technetium

Tc · Z 43

atomic number

43

atomic mass

98

notation

Tc

group

7: Manganese

period

5

state0c

Solid

state20c

Solid

occurrence

From Decay

density

11

melting pt

2160

boiling pt

4265

discovered

1937

abundance

1e-13

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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.