Which one is more metallic?
Correct answer: C. Cs
- A. Na
- B. Mg
- C. Cs
- D. K
Explanation
The metallic character of elements increases down a group (column) in the periodic table. Caesium (Cs) is in group 1, period 6, making it the most metallic among the options.
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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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