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NEETChemistryd and f Block Elements

What happens to the atomic radii of the second (4d) series of elements when compared to the first (3d) series?

Options

  1. AThe atomic radii of the second (4d) series decrease.
  2. BThe atomic radii of the second (4d) series remain the same.
  3. CThe atomic radii of the second (4d) series increase.
  4. DThe atomic radii of the second (4d) series vary unpredictably.

Correct answer

C. The atomic radii of the second (4d) series increase.

Step-by-step solution

The atomic radii of the second (4d) series show an increase when compared to the first (3d) series.

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