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Question: Answered & Verified by Expert
Why do ions of the same charge in a given series show a progressive decrease in radius with increasing atomic number?
Chemistryd and f Block ElementsNEET
Options:
  • A Because the shielding effect of a d electron is not effective.
  • B Because the net electrostatic attraction between the nuclear charge and the outermost electron decreases.
  • C Because the new electron enters a d orbital each time the nuclear charge increases by unity.
  • D Because the variation within a series is quite small.
Solution:
1290 Upvotes Verified Answer
The correct answer is: Because the new electron enters a d orbital each time the nuclear charge increases by unity.
Ions of the same charge in a given series show a progressive decrease in radius with increasing atomic number because the new electron enters a d orbital each time the nuclear charge increases by unity.

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