1. Tardigrade
  2. Question
  3. Chemistry
  4. Which of the following statements is correct about shielding effect? A. It is effective when the orbitals in the inner shells are completely filled B. Inner shells do not show any effect C. With increase of shielding down the group, ionization energy increases D. With increasing nuclear charge, the shielding effect increases

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Q. Which of the following statements is correct about "shielding effect"?
A. It is effective when the orbitals in the inner shells are completely filled
B. Inner shells do not show any effect
C. With increase of shielding down the group, ionization energy increases
D. With increasing nuclear charge, the shielding effect increases

AP EAMCETAP EAMCET 2020

Solution:

1. Shielding effect is effective, when orbitals in the inner shells are completely filled. So, statement (1) is correct.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group.
So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So,
statement 4 is incorrect.