Chemistry · Transition Elements: General introduction, electronic configuration, occurrence and characteristics
Which out of the following belongs to -series? This question has multiple correc
Which out of the following belongs to \( 3 d \) -series? This question has multiple correct options
- A. copper
- B. cobalt
- C. gold
- D. silver
Step-by-step solution
The 3d-series (first transition series) includes elements from scandium to zinc. Copper (Cu, atomic number 29) and cobalt (Co, atomic number 27) both belong to this series, while gold (Au) is in the 5d series and silver (Ag) is in the 4d series. Since the question allows multiple correct options but the response requires a single choice, copper is selected as a correct example.
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