https://byjus.com/questions/the-maximum-number-of-electrons-that-can-be-accomodated-in-an-orbit-is-given-by-the-formula-fill-in-the- خالی-جایی-n-تعداد-مدار/
https://byjus.com/questions/the-maximum-number-of-electrons-that-can-be-accomodated-in-an-orbit-is-given-by-the-formula-fill-in-the- خالی-جایی-n-تعداد-مدار/