There are 20...
19
You have to find out how many 6s go into 100 evenly so 100/6=16 with a remainder of 4 so you will pass by 16 6s
there will be 10 6s through the whole thing
20.
20
20
you would pass ten on the way.
There is one six in the units place every 10 numbers. So from 1 to 1000 there are 100 6s in the units place. There are ten sixes in the tens place every 100 numbers, so from 1 to 1000 there are 100 6s in the tens place. Finally, there are 100 numbers that have 6 in the hundreds place. Add all these together, and you get 300. Thus there are 300 6s between 1 and 1,000.
The 6s sublevel can hold a maximum of 2 electrons.
50
20.