And then if you were to keep going back you would then go to 5p6 so then it would be 5p6 and then it would fill out these 10 in the D block right there that are in the 5th period but remember you subtract one from the D block so it'd be 4d10 and then it's 5s2 and you just keep going back that way, and it seems complicated at first but just remember when you are in the S or the P block you just look at the period you are in but then when you start filling the D block it fills in a subshell that's one lower and when you start fillng the F block which are these really large elements you start fillng a subshell that is two lower so maybe in the next video