Metallic characters of alkali metals_____________________?
Correct answer: A. Increase down the group
- A. Increase down the group
- B. Decrease down the group
- C. No regular trend
- D. Remain same
Explanation
Metallic character increases down Group 1 because atomic size and shielding increase, making the outer electron easier to remove. The likely mistake is choosing b, decrease down the group, by focusing on the increased number of shells without considering the weaker attraction between the nucleus and the valence electron.
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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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