Monday? I don't know but in my early days of trading about 2 years ago, I always been traded in every Monday, but after comparing with the other days, i saw that Monday is not that volatilty even i can say the pips movement is quite high there, but not as much as Tuesday to Friday.
Monday is more for scalper cause the trends are so erratic cause its the beginning of the week. But you could buy low on early Monday and leave it to sell later on for the week or for many weeks. But Monday have some movement that could be ideal for scalper. I think its the first day of business so I'm sure there will be volume as well and then mid week like Weds or Thurs are very hot. Friday is dead so no Friday for me.