Transition metals Watch
Hang it infront of your Study Desk.
Use distinctive characteristics colour for each of the ions.
well you don't need soo many colour.
You need the mosts are --> Blue, green, Purple, Red --(orange, yellow)
Help yourself or make yourself to look at it atleast 20mins everyday learning the whole thing.
this helped me.
As there aren't any funnier way to learn transition metals because, you are going to stumble or jumble them up so its better not to.
For vanadium I remember them by You Better Get Vanadium. Yellow (VO2 +), Blue (VO2+), Green (V3+), Violet (V2+ )
For chromium, I made a flowchart several times and I'd write the colours under each formula and then after that I would just randomly test myself by making it on any rough paper whenever I felt like it