One of the four elements that have the greatest metallic radii is?

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One of the four elements that have the greatest metallic radii is? Answer: Strontium (Sr)

In Group 2 (alkaline earth metals) of the periodic table, the metallic radius increases down the group as additional electron shells are added. Therefore, among Be, Mg, Ca, and Sr — Strontium (Sr) has the largest metallic radius due to its higher atomic number and greater number of electron shells.

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This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.