Electron Configurations Worksheet (Page 5 of 8) in pdf

Electron Configurations Worksheet Page 5

11. The Pauli exclusion principle describes the restriction on the placement of electrons into the

same orbital. The Pauli exclusion principle can be expressed as: “If two electrons occupy the same

orbital, they must have __________________.” Circle the correct answer.

the same spin

opposite spins

12. Hund’s rule describes how electrons are distributed among orbitals of the same sublevel when

there is more than one way to distribute them. Hund’s rule consists of two important ideas.

Based on Model 2, circle the correct answer to each statement.

a. Electrons will pair up in an orbital only when __________________

there is an even number of electrons in the sublevel

all orbitals in the same sublevel have one electron

b. When single electrons occupy different orbitals of the same sublevel, __________________.

they all have the same spin

they all have different spins

their spins are random

13. For each of the symbols below from Model 2, provide the name or description of the analogous

component that was used in the boarding house model (Model 1).

b. What characteristic of electrons is not well represented by the boarding house model?

c. How could the boarding house model be modified to better represent the relative energies of s

and p sublevels?

Electron Configuration

Electron Configurations Worksheet Page 5