DE_Chem_2.2.1

DE_Chem_2.2.1_
What Arrangement of Electrons in an Atom Did Niels Bohr Propose?

JJ Thompson's Model

Rutherfords Model

​​Bohr's Model

Reorder

List the scientists who helped us develop a model of the atom, from first to most recent.

• JJ Thompson

• Thomas Rutherford

• Niels Bohr

• Werner Heisenberg

1

2

3

4

• 1
• 2
• 3
• 4

Absportpion/Emission Spectra

Colors relate to energy absorbed/released

​the specific amount of energy emitted or absorbed by electrons moving between energy levels

​A Quantum of Energy

Fill in the Blank

the specific amount of energy emitted or absorbed by electrons moving between energy levels is called a _______ of energy.

Bohr calculated the energy of a hydrogen electron...

Here, E is the energy of an electron and n is an integer that corresponds to the energy level where the electron is located.

​

Fill in the Blank

Calculate the energy of an electron in the fourth energy level (n = 4) of hydrogen.

=

.

​What I Learned...