In group 2, beryllium and calcium elements, calcium is more elect… - Vidyadip

Question

In group 2, beryllium and calcium elements, calcium is more electropositive element than beryllium.

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Answer

Electronic configuration of beryllium is (2, 2).
Electronic configuration of calcium is (2, 8, 8, 2).
Among beryllium and calcium elements, calcium has the least effective nuclear charge exerting attractive force on valence electrons.
This is because of the electrons in the inner shells, which lie in between the valence shell and the nucleus.
These electrons act as a shield reducing the attractive force of the nucleus on the valence electrons. Therefore, calcium can lose its valence electrons more readily than beryllium.
Hence, in group 2, calcium is a more electropositive element than beryllium.

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