Greater shielding effect corresponds to ionization energy value___________________?
Correct answer: B. Lesser
- A. Greater
- B. Lesser
- C. Remain same
- D. No effect
Explanation
Greater shielding reduces the effective nuclear attraction experienced by the outer electron, so less energy is needed to remove it and ionization energy is lower. Students may choose greater because both are periodic properties, but shielding opposes the nucleus's attraction and therefore lowers ionization energy.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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