Respuesta :
The first shell can hold up to two electrons, the second shell can hold
up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6
+ 10) and so on.
The general formula is that the nth shell can in principle hold up to 2(n2) electrons.
The general formula is that the nth shell can in principle hold up to 2(n2) electrons.