Identify the incorrect statements about IIA group elements:
Correct answer: D. Ionization energy of Ca is higher than that of Mg
- A. They are known as alkaline earth metals
- B. They have two electrons in the outermost shell and occupy s sub-shell
- C. Their atomic radii increase down the group
- D. Ionization energy of Ca is higher than that of Mg
Explanation
The incorrect statement about the alkaline earth metals is that the ionization energy of calcium (Ca) is higher than that of magnesium (Mg).While the other options are correct, the ionization energy trend in alkaline earth metals is an exception where Mg has a slightly higher ionization energy than Ca due to shielding effects from the filled s subshell.
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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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