The property which increases upto group IV-A then decreases onwards
Correct answer: D. Atomic volume
- A. Ionization energy
- B. Atomic radii
- C. Melting & boiling points
- D. Atomic volume
Explanation
Correct: As we move across a period in the periodic table from left to right, the increasing atomic number attracts electrons more tightly, resulting in decreased atomic radii. This, coupled with the increasing number of electron shells, leads to an initial increase in atomic volume up to Group IV-A. After that, the decrease in atomic radii outweighs the addition of another shell, causing the atomic volume to decrease onwards.
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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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