Periodic Classification and Periodic Properties 2 Question 36

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36. $\mathrm{Ca}^{2+}$ has a smaller ionic radius than $\mathrm{K}^{+}$because it has ______

(1993, 1M)

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Answer:

Correct Answer: 36. (Higher effective nuclear charge)

Solution:

  1. Higher effective nuclear charge due to greater $p / e$ ratio.