Electron shell

Electrons occupy specific orbits or shells, each with a fixed capacity. As the atomic number increases, these shells fill up from the inside out, following a specific order.

What determines the specific orbits or shells that electrons can occupy?

How many electrons can each orbit or shell contain?

Explain the relationship between atomic number and electron configuration.

Describe the process of how electron shells fill up as atomic number increases.

What is the significance of the phrase 'inside out' in relation to electron shell filling?