I think the answer for the 2nd principle energy level is 8 electrons
Eight electrons fit in the second shell.
Two electrons can fit into the first orbital shell of any atom.
On the first shell you can only fit 2. 2nd shell is 8. 3rd shell is 18.
kup@l mo
There can be 10 electrons in the n=2 shell. Two can fit in the 1s orbital, two can fit in the 2s orbital, and six can fit in the 2p orbital.
Eight electrons fit in the second shell.
Two electrons can fit in the first shell
Two electrons can fit into the first orbital shell of any atom.
eight
On the first shell you can only fit 2. 2nd shell is 8. 3rd shell is 18.
One
kup@l mo
One
There can be 10 electrons in the n=2 shell. Two can fit in the 1s orbital, two can fit in the 2s orbital, and six can fit in the 2p orbital.
First orbital can be occupied by a total of 2 electrons and the second orbital can be occupied by a total of 8 electrons. 1s^2 2s^2 2p^6 ( what element is this ? )
4
The inner electron shell (also known as the s shell) can hold only two electrons. There are only two elements, hydrogen and helium, whose electrons all fit into the first shell.