All of the following statements about alkali and alkaline earth metals are correct EXCEPT?
Correct answer: D. Reactions of alkaline earth metals are more vigorous than those of alkali metals
- A. The alkali metals have one electron in their valence shells whereas the alkaline earth metals have two electrons
- B. The alkaline earth metals are harder and heavier than alkali metals
- C. The carbonates and sulphates of alkali metals except Li2CO3 are soluble in water, whereas those of alkaline earth metals are insoluble
- D. Reactions of alkaline earth metals are more vigorous than those of alkali metals
Explanation
The incorrect statement about alkali and alkaline earth metals is Reactions of alkaline earth metals are more vigorous than those of alkali metals.The alkali metals are more reactive than the alkaline earth metals. This is because the alkali metals have a lower ionization energy, which means that it is easier to remove an electron from an alkali metal atom. As a result, the alkali metals react more vigorously with other substances.
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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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