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NEETChemistryd and f Block Elements

The second and third rows of transition elements resemble each other much more than they resemble the first row. Explain why?

Options

  1. AThe second and third rows have similar electron configurations.
  2. BThe second and third rows have similar atomic sizes.
  3. CThe second and third rows have similar ionization energies.
  4. DThe first row has a completely filled d-orbital, while the second and third rows have partially filled d-orbit

Correct answer

B. The second and third rows have similar atomic sizes.

Step-by-step solution

Correct Option is : (B) The second and third rows have similar atomic sizes.

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