1. Tardigrade
  2. Question
  3. Chemistry
  4. The number of elements present in 4d series is .

Q. The number of elements present in series is ______.

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Answer: 10

Solution:

In the d-block elements, the differentiating electron enters in d-subshell. The d-subshell contain five d-orbitals and ecah orbital can accommodate two electrons. Hence, there are 10 elements present in the 4d series.