Transition Metals
The (loosely defined) transition metals are the 40 chemical elements 21 to 30, 39 to 48, 71 to 80, and 103 to 112. The name transition comes from their position in the periodic table of elements. In each of the four periods in which they occur, these elements represent the successive addition of electrons to the d atomic orbitals of the atoms. In this way, the transition metals represent the transition between group 2 elements and group 13 elements.
| Transition Metals | ||||||||||
| Group | 3 (IIIB) |
4 (IVB) |
5 (VB) |
6 (VIB) |
7 (VIIB) |
8 (VIIIB) |
9 (VIIIB) |
10 (VIIIB) | 11 (IB) |
12 (IIB) |
| Period 4 | 21 Sc 44.95 |
22 Ti 47.86 |
23 V 50.94 |
24 Cr 51.99 |
25 Mn 54.93 |
26 Fe 55.84 |
27 Co 58.93 |
28 Ni 58.69 |
29 Cu 63.54 |
30 Zn 65.39 |
| Period 5 | 39 Y 88.90 |
40 Zr 91.22 |
41 Nb 92.90 |
42 Mo 95.94 |
43 Tc 98.00 |
44 Ru 101.0 |
45 Rh 102.9 |
46 Pd 106.4 |
47 Ag 107.8 |
48 Cd 112.4 |
| Period 6 | 57 La 138.9 |
72 Hf 178.4 |
73 Ta 180.9 |
74 W 183.8 |
75 Re 186.2 |
76 Os 190.2 |
77 Ir 192.2 |
78 Pt 195.0 |
79 Au 196.9 |
80 Hg 200.5 |
| Period 7 | 89 Ac 227.0 |
104 Rf 261.0 |
105 Db 262.0 |
106 Sg 266.0 |
107 Bh 264.0 |
108 Hs 269.0 |
109 Mt 268.0 |
110 Uun 269.0 |
111 Uuu 272.0 |
112 Uub 277.0 |
Technically, Zn, Cd, Hg, and Uub are not actually Transition Metals as they are unable to form partially complete d-orbital subshells