| Aspect | First Transition Series | Second Transition Series |
| Period no of the Periodic Table | · 4th period | · 5th period |
| Series | · 3d Series | · 4d Series |
| Examples | · Sc · Ti · V · Cr · Mn · Fe · Co · Ni · Cu | · Y · Zr · Nb · Mo · Tc · Ru · Rh · Pd · Ag · Cd |
| Electron Configuration | · Scandium Sc [Ar] 3d14s2 | Yttrium Y [Kr] 4d15s2 |
| · Titanium Ti [Ar] 3d2 4s2 · Vanadium V [Ar] 3d3 4s2 | Zirconium Zr [Kr] 4d2 5s2 Niobium Nb [Kr] 4d4 5s1 | |
| · Chromium Cr [Ar] 3d54s1 | Molybdenum Mo [Kr] 4d5 5s1 | |
| · Manganese Mn [Ar] 3d5 4s2 | Technetium Tc [Kr] 4d5 5s2 | |
| · Iron Fe [Ar] 3d6 4s2 | Ruthenium Ru [Kr] 4d7 5s1 | |
| · Cobalt Co [Ar] 3d7 4s2 | Rhodium Rh [Kr] 4d85s1 | |
| · Nickel Ni [Ar] 3d8 4s2 | Palladium Pd [Kr] 4d105s0 | |
| · Copper Cu [Ar] 3d10 4s1 | Silver Ag [Kr] 4d105s1 | |
| · Zinc Zn [Ar] 3d10 4s2 | Cadmium Cd [Kr] 4d105s2 | |
| Magnetic Properties | · Many are magnetic, with iron being the most magnetic element in the 3d series. | · Similar magnetic properties to the first-row transition elements. |
| Chemical Properties | · Exhibit a wide range of chemical properties and varying oxidation states. | · Exhibit similar chemical properties to their first-row counterparts but may have slightly different reactivity. |
| Uses | · Used in a aerospace · Electrical wiring and manufacturing | · Aerospace · Automotive and electronics |
Which of the following is a member of first transition series?
Question: Which of the following is a member of first transition series?
A Ni
B Au
C Pt
D Ag
Answer: Ni