Which one of the following does not exist ? `(i) XeOF_(4) (ii) NeF_(2) (iii) XeF_(2) (iv) XeF_(6)`.

Which one of the following does not exist ? `(i) XeOF_(4) (ii) NeF_(2)

1.	Which one of the following does not exist ? `(i) XeOF_(4) (ii) NeF_(2) (iii) XeF_(2) (iv) XeF_(6)`.
Answer» `NeF_(2)` does not exist because the element Ne(Z=10) with `1s^(2)2s^(2)2p^(6)` does not have vacant 2d orbitals. As such there is no scope of any electron promotion even by a highly electronegative element.

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Which one of the following does not exist ? `(i) XeOF_(4) (ii) NeF_(2) (iii) XeF_(2) (iv) XeF_(6)`.

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