Which of the following elements of IIA group shows more metallic character?
Correct answer: C. Ba
- A. Be
- B. Mg
- C. Ba
- D. Ca
Explanation
Barium is located at the bottom of Group 2, and it is the largest and most metallic element among the options. It has the lowest effective nuclear charge and the highest tendency to lose electrons, which are characteristics of metals. Therefore, option C is correct. Beryllium is small and has a high effective nuclear charge, making it less metallic. Magnesium is larger than Beryllium but still less metallic than Barium. Calcium is larger than Beryllium but not as metallic as Barium.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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