what I mean is if is province 3 is in the centre 2 west, 4 east, 8 in south but in north no province becous it is the end of your empire and no province can be colonised is there moral drop ?
No, there is no moral drop for that since province 3 is not surrounded by 4 other provinces.
Think at it this way: your Empire is in the vicinity of other Empires so near your province 3 will be a province from othe player. If you can colonize that province of the other player (you can't, don't ask) you will get that moral drop you want so badly