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A, B, C, D and E are the elements belonging to 13th group of Modern periodic table. The correct atomic radius trend for these elements is A< B <C < D< E . The element ‘C' in the sequence is
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Correct option is A
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The bond dissociation energy of BF bond in BF3 is 646 kJ mol–1 whereas that of CF in CF4 is 315 kJ mol–1. The correct reason for higher BF bond dissociation energy as compared to that of CF bond is :
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