If the double bond is broken heterolytically, formal charge pairs result, as shown in the other two structures. The preferred charge distribution will have the positive charge on the less electronegative atom (carbon) and the negative charge on the more electronegative atom (oxygen).
Single malt Scotch. Single malt Scotch is single malt whisky made in Scotland. To be a single malt scotch the whisky must have been distilled at a single distillery using a pot still distillation process and made from a mash of malted grain. In Scotland, the only grain allowed to be used in a single malt whisky is barley.
Scotch âº Single Malts. Single malt whisky is a whisky made at one particular distillery from a mash that uses one particular malted grain, which is ordinarily barley. Single malts are typically associated with Scotland, though they are also produced in various other countries.