HomeworkChapter 3.2 - 3.3 Atoms First-5-1.docx - Chapter...

Chapter 3.2 – 3.3 (Openstax.org – Atoms First) Homework
Model 1. Bohr Model
E
n
= -2.18 x 10 -18 J (1/n 2 ) (n = 1,2, 3, . . .)
∆ E =− 2.18 x 10
− 18
J
(
1
n
f
2
−
1
n
i
2
)
1. Calculate the energy of an electron in n=5 level in a hydrogen atom?
2. Calculate the change in energy,
∆ E,
when an electron in a hydrogen atom makes a transition
from an orbital in which n = 5 to an orbital in which n = 2.
3. Calculate the change in energy,
∆ E,
when an electron in a hydrogen atom makes a transition
from an orbital in which n = 2 to an orbital in which n = 5.
General Chemistry I Naomi F. Campbell

Chapter 3.2 – 3.3 (Openstax.org – Atoms First) Homework
Model 2. Quantum-Mechanical Model of the Atom
Describe the position of electron by a probability distribution map called an orbital. There are four
quantum numbers. Three quantum numbers describe three orbitals and the fourth quantum number is a
property of the electron.