Lithium shows a diagonal relationship with
Correct answer: B. magnesium
- A. sodium
- B. magnesium
- C. beryllium
- D. aluminium
Explanation
Lithium resembles magnesium because their ions have similar size to charge ratios, so both form nitrides directly with nitrogen, both give carbonates that decompose on heating and both have oxides that are less soluble than those of their own group. Beryllium is diagonally related to aluminium in the same way. Diagonal relationships are strongest in the second and third periods.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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