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Question
Which one of the following does not exist?
(i) XeOF4
(ii) NeF2
(iii) XeF2
(iv) XeF6
Solution 1
NeF2 does not exist.
Solution 2
NeF2 does not exist. This is because the sum of first and second ionization enthalpies of Ne are much higher than those of Xe. Consequently, F2 can oxidise Xe to Xe2+ but cannot oxidise Ne to Ne2+.
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| List - I | List - II | ||
| (Species) | (Number of lone pairs of electrons on the central atom) |
||
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