Electron Shell Capacity
How Many Electrons Can the 2nd, 3rd, and 4th Electron Shells Hold?

Learn how many electrons the 2nd, 3rd, and 4th electron shells can hold using the 2n² formula for electron capacity.

Third Shell: 8 or 18?
Understanding the Third Shell: How Many Electrons Does It Hold?

Learn about the third shell of an atom and its capacity to hold electrons. Discover the Aufbau principle and electron configuration.