Tc - Technetium - periodic table of the elements

Technetium was discovered in platinum ore using x-ray technology by Walter Noddack and Ida Tacke in Berlin. The element was artificially produced in 1937 by Emilio Segrè and Carlo Perrier at UC Berkeley.

Atomic number	-	43		Density	g/mL	11	.5
Atomic weight	u	98		Melting point	K	2473
Bonding radius	A	1	.27	Boiling point	K	4538
Atomic radius	A	1	.95	Heat of vaporization	kJ/mol	660
Ionization Potential	V	7	.28	Heat of fusion	kJ/mol	24
Electronegativity	-	1	.9	Specific heat	J/gK	0	.21
The oxide is a strong acid.				Crystal are hexagonal.
Electron configuration: [Kr] 4d⁵ 5s²

Other elements of the periodic table

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La * Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac ** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr