A) Only the heavier noble gases fo.rm such compounds
B) It happens because the noble gases have higher ionisation energies
C) It happens because the compounds are formed with electronegative ligands
D) Octet of electrons provide the stable arrangements
Correct Answer: A
Solution :
Ionisation potential values of noble gases decrease down the group with increase in atomic size. Xenon forms binary fluorides by the direct reaction of elements; The reason is that only the heavier noble gases form such compounds. Octet of electrons provide the stable arrangements but this statement is not very much valid in cases of higher element which can be ionised easily due to large distance between nucleus and valence electrons.
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