Which one of the following pairs shows diagonal relationship in the periodic table?
Correct answer: C. Lithium and beryllium
- A. sodium and lithium
- B. Lithium and magnesium
- C. Lithium and beryllium
- D. Boron and Beryllium
Explanation
The diagonal relationship occurs between elements lying diagonally across each other in the periodic table, typically from Group 1 (alkali metals) to Group 2 (alkaline earth metals).These elements share some similar chemical and physical properties despite belonging to different groups.In this case, lithium and beryllium both exhibit small sizes, high charge densities, and similar tendencies to form covalent bonds, showcasing the diagonal relationship.
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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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