9. Quantum Mechanics

Bohr Model

9. Quantum Mechanics

# Bohr Model - Video Tutorials & Practice Problems

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In the **Bohr Model**, electrons can move up and down to different orbitals or shells based on absorbing or releasing of energy.

Bohr Model

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concept

## Bohr Model

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example

## Bohr Model Example 1

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concept

## Bohr Model

Video duration:

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4

Problem

ProblemWhich of the electron transitions represents absorption with the greatest frequency?

A

n = 5 to n = 3

B

n = 1 to n =3

C

n = 2 to n = 4

D

n = 6 to n = 7

E

n = 4 to n = 5

5

Problem

ProblemWhich of the following transitions (in a hydrogen atom) represent emission of the shortest wavelength?

A

n = 3 to n = 1

B

n = 2 to n = 4

C

n = 1 to n = 4

D

n = 5 to n = 3

E

n = 2 to n = 5

6

Problem

ProblemIf the energy of an electron within the boron atom was calculated as –6.0556 x 10^{-18} J, at what energy level would it reside?

A

2

B

3

C

4

D

5

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PRACTICE PROBLEMS AND ACTIVITIES (22)

- Which arrow in the energy diagram for an atom represents the absorption of light with the shortest wavelength?...
- Consider the three electronic transitions in a hydrogen atom shown here, labeled A, B, and C. (a) Three electr...
- Does the hydrogen atom 'expand' or 'contract' when an electron is excited from the n = 1 state to the n = 3 st...
- Classify each of the following statements as either true or false: (a) A hydrogen atom in the n = 3 state can ...
- Is energy emitted or absorbed when the following electronic transitions occur in hydrogen? (b) from an orbit o...
- Is energy emitted or absorbed when the following electronic transitions occur in hydrogen? (a) from n = 3 to ...
- Indicate whether energy is emitted or absorbed when the following electronic transitions occur in hydrogen: (a...
- (a) Using Equation 6.5, calculate the energy of an electron in the hydrogen atom when n = 3 and when n = 6. Ca...
- Consider a transition of the electron in the hydrogen atom from n = 8 to n = 3. (b) Will the light be absorbed...
- The hydrogen atom can absorb light of wavelength 1094 nm. (b) Determine the final value of n associated with t...
- Determine whether each transition in the hydrogen atom corresponds to absorption or emission of energy. a. n =...
- Ionization involves completely removing an electron from an atom. How much energy is required to ionize a hydr...
- An atomic emission spectrum of hydrogen shows three wavelengths: 121.5 nm, 102.6 nm, and 97.23 nm. Assign thes...
- Bohr's model can be used for hydrogen-like ions—ions that have only one electron, such as He + and Li2 + . (a)...
- An atomic emission of light with a specific amount of energy from an atom confirms that
- Consider a hydrogen atom in the ground state. What is the energy of its electron?
- How much energy does the electron have initially in the n=4 excited state
- How much energy does the electron have initially in the n=4 excited state?
- Which of the following transitions (in a hydrogen atom) represent absorption of the smallest frequency photon?
- Determine whether each of the following transitions in the hydrogen atom corresponds to absorption or emission...
- Which of the following transitions represent the emission of a photon with the largest energy?
- Consider a hydrogen atom in the ground state. What is the energy of its electron?