Be has diagonal relationship with
Correct answer: D. Al
- A. Li
- B. B
- C. Na
- D. Al
Explanation
Beryllium (Be) has a diagonal relationship with Aluminum (Al). This is a phenomenon observed in the periodic table where elements in adjacent groups and periods exhibit similar properties. The diagonal relationship occurs because the increase in atomic number across a period and down a group affects the properties of elements in such a way that they become comparable. In this case, Be and Al show similarities in their chemical behavior, despite being in different groups. The other options, Li, B, and Na, do not exhibit this diagonal relationship with Be due to their positions in the periodic table.
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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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