Give reaction for the following :
'In acylium ion, the structure `R-C -= O^(oplus)` is more stable than `R- overset(oplus) C=O`.

Explanation

`R -overset(oplus) underset((I))C = ddotO: harrR - underset((II))C -= overset(oplus) O:`.
`(II)` is more stable because both `C` and `O` have an octet and there is one more convalent bond, although there is a positive charge on `EN O` atom. `(I)` is less stable because it has high energy because `C` has only six `overline e^, s`.