הקשר הכימי -2019
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The halogen bond RX···N is weaker with: A stronger Lewis base. A more electropositive R. Br instead of I.
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The activation energy of the umbrella inversion for PH3 is larger than for NH3 since
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The C-C single bond has an energy of approximately 50 kJ/mol 150 kJ/mol 350 kJ/mol
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The פאי orbitals of methylenecyclopropene in order of energy, are: In which carbon there will be a nucleophilic attack?
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With a bigger basis set the HF energy of a reaction A + B - C will be Higher Lower Not possible to know.
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