Less electronegative elements such as Be, Ga, Al etc. form:
Correct answer: B. Covalent halides
- A. Polymeric halides
- B. Covalent halides
- C. Ionic halides
- D. All
Explanation
Less electronegative elements share the electrons in a halide compound more readily compared to highly electronegative elements like fluorine. This shared electron ownership leads to covalent bonding instead of complete electron transfer and formation of ionic bonds. Hence, Be, Ga, Al, etc., form covalent halides with halogens.
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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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