Bohr Model (College)
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Bohr Model
1.
Which of the following correctly describes the Bohr Model?
- The electron exists in triangular regions called orbitals
- Electrons are distributed randomly throughout an atom
- Electrons are distributed in a dense region known as an orbital
- Electrons are distributed in a circular region known as orbits
2.
Which of the following is represented by the discrete lines in bright-line spectra?
- definite speeds of light
- definite frequencies
- definite wavelengths
- none of the above
3.
Which of the following equations represents energy that can be used in problems involving specific energy transitions?
- E=[math](-2.178 xx 10^-18 J)(Z^2/n^2)[/math]
- ∆E=[math]h/{mv}[/math]
- [math]∆E=nhv[/math]
- ∆E=hf
4.
To which of the following elements does the Bohr model apply to?
- helium, only
- hydrogen and helium
- hydrogen, only
- hydrogen, helium, and lithium
5.
What is the energy associated with an electron in the fifth energy level of a hydrogen atom?
- [math]-2.178xx10^-18 J[/math]
- [math]-5.445 xx 10^-19 J[/math]
- [math]-2.42 xx 10^-19 J[/math]
- [math]-8.712 xx 10^-20 J[/math]
6.
What is the value of energy associated with the second energy level of an atom?
- [math]-5.445 xx 10^-19 J[/math]
- [math]-8.712 xx 10^-20 J[/math]
- [math]-2.42 xx 10^-19 J[/math]
- [math]-2.178 xx 10^-18 J[/math]
7.
Calculate ∆E when the following transition occurs in a hydrogen atom: [math]n=2 rarr n=6[/math].
- [math]-5.45 xx 10^-19 J[/math]
- [math]-6.05 xx 10^-20 J[/math]
- [math]4.84 xx 10^-19 J[/math]
- [math]-4.84 xx 10^-19 J[/math]
8.
Calculate ∆E when the following transition occurs in a hydrogen atom: [math]n=4 rarr n=2[/math].
- [math]-1.36 xx 10^-19 J[/math]
- [math]-4.084 xx 10^-19 J[/math]
- [math]-5.45 xx 10^-19 J[/math]
- [math]4.084 xx 10^-19 J[/math]
9.
Calculate ∆E when the following energy change occurs: n=1 to n=5.
10.
Electrons move in circular orbits, as stated by the Bohr Model.
- True
- False
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