Electron Configuration and Energy Shells

The video tutorial explains how to determine the number of electrons each energy shell can hold. It covers the concept of electron shells and orbitals, detailing the different types of orbitals (s, p, d, f) and their electron capacities. The tutorial introduces two methods for calculating electron capacity: using the formula 2 * N^2, where N is the principal quantum number, and using the orbital configuration. The video also provides examples to illustrate these calculations and emphasizes the importance of understanding electron configurations.

What are the two ways electron energy shells can be numbered?

• By atomic mass and atomic number

• By energy level and valence electrons

• By principal quantum number and alphabetical notation

• By electron configuration and atomic radius

Which of the following is NOT a type of orbital?

• h

• d

• p

• s

How many electrons can the s orbital hold?

• 8

• 6

• 4

• 2

What is the formula used to calculate the number of electrons in each shell?

• n^3

• 2 * n^2

• n^2

• 2 * n

If the principal quantum number (n) is 3, how many electrons can the shell hold?

• 32

• 50

• 18

• 8

Which orbital type can hold a total of 10 electrons?

• p

• f

• s

• d

What is the total electron capacity of the fourth energy shell using the formula?

• 72

• 50

• 32

• 18

How many orbitals does the f type have?

• 9

• 7

• 5

• 3

What is the electron configuration for the second energy level?

• 3s 3p 3d

• 4s 4p 4d 4f

• 2s 2p

• 1s

Which method provides a visual representation of electron distribution in shells?

• Using atomic number

• Using orbitals

• Using atomic mass

• Using the formula 2 * n^2