Which of the following halides shows bridge type structure?
Correct answer: D. AlCl3
- A. NaCl
- B. CCl4
- C. CaCl2
- D. AlCl3
Explanation
The correct answer is AlCl3. In its gaseous and liquid states, AlCl3 exists as a dimer (Al2Cl6) where two chlorine atoms form bridges between two aluminum atoms, leading to a bridge type structure. NaCl is an ionic compound with a lattice structure, CCl4 is a covalent molecule with a tetrahedral shape, and CaCl2 is a simple ionic compound, none of which form bridge-like structures.
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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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