Which property of alkaline earth metals increases systematically down Group 2?
Answer and explanation
Correct answer: A. Atomic radius
- Step 1: Moving down Group 2 (Be to Ba), each successive element adds a new principal energy shell. Step 2. This increases the distance of valence electrons from nucleus, increasing atomic radius. Answer: Atomic radius. Why not the others: First ionization energy decreases down the group; electronegativity decreases down the group; hydration enthalpy decreases as ionic radius increases.
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