All chemical elements

Symbol

Tc

Atomic number

43

Chemical property

Transition metal

Origin o the name

the Greek tekhnètos meaning 'artificial'

Group

7

Period

5

Density (g/cm³)

11.5

Melting point (K)

2430

Boiling point (K)

4538

Electro-negativity

1.9

Abundance in earth's crust (mg/kg)

0