Electron Shells and Their Capacities

The video reviews the rules for writing electronic configurations. It covers the maximum number of electrons in each shell using the formula 2n², the stepwise filling of shells, and the electron limit for the outermost shell. The K shell can hold a maximum of 2 electrons, the L shell 8, the M shell 18, and the N shell 32. The outermost shell cannot have more than 8 electrons, except for the K shell.

What formula is used to determine the maximum number of electrons in a shell?

• n²

• 2n²

• 2n

• n

How many electrons can the K shell hold at most?

• 8

• 32

• 2

• 18

Which shell can hold a maximum of 18 electrons?

• K shell

• N shell

• L shell

• M shell

In what order are the shells filled with electrons?

• Outermost to innermost

• Random order

• Based on atomic number

• Innermost to outermost

What must happen before electrons can be added to the L shell?

• The K shell must be filled

• The L shell must be empty

• The N shell must be filled

• The M shell must be filled

What is the maximum number of electrons the outermost shell can have?

• 32

• 2

• 8

• 18

Which shell is exempt from the rule limiting the outermost shell to eight electrons?

• K shell

• M shell

• N shell

• L shell

If the L shell is the outermost shell, how many electrons can it hold?

• 32

• 2

• 8

• 18

What is the maximum capacity of the K shell?

• 2 electrons

• 8 electrons

• 32 electrons

• 18 electrons

Which of the following shells can never have more than two electrons?

• M shell

• N shell

• K shell

• L shell