Question 1

In the Bohr model of the atom, what does the principal quantum number $$n$$ represent?

Accepted Answer

The energy level or shell in which an electron resides

Question 2

Which electron transition corresponds to the absorption of energy?

Accepted Answer

$$n=1 \rightarrow n=3$$

Question 3

What is the value of $$n$$ for the electron furthest from the nucleus in a Bohr atom with 6 electrons?

Accepted Answer

$$n=6$$

Question 4

Which electron transition represents an example of emission?

Accepted Answer

$$n=7 \rightarrow n=2$$

Question 5

Which electron transition represents an example of absorption with the greatest energy?

Accepted Answer

$$n=1 \rightarrow n=6$$

Question 6

According to the Bohr model, what happens to the potential energy of an electron as it moves to a higher shell?

Accepted Answer

It increases

Question 7

If an electron in a hydrogen atom moves from $$n=4 to$$ $$n=2$$, what type of process is this?

Accepted Answer

Emission

Question 8

Which of the following best describes the relationship between the distance from the nucleus and the energy required for electron transitions?

Accepted Answer

The greater the distance between shells, the greater the energy required for the transition

Question 9

Which transition would release the most energy as a photon?

Accepted Answer

$$n=6 \rightarrow n=1$$

Question 10

A student observes a bright line in the emission spectrum of hydrogen. Which electron transition is most likely responsible for this observation?

Accepted Answer

$$n=3 \rightarrow n=2$$

Question 11

If an electron absorbs energy and moves from $$n=2 to$$ $$n=5$$, what will happen if it returns to $$n=2$$?

Accepted Answer

It will emit energy as a photon

Question 12

Which statement about electron shells in the Bohr model is correct?

Accepted Answer

Electrons in higher shells have higher potential energy

Question 13

Which of the following transitions would require the least amount of energy?

Accepted Answer

$$n=5 \rightarrow n=6$$

Question 14

In a medical imaging technique, electrons are excited to higher energy levels. Which process is responsible for the emission of light observed in this technique?

Accepted Answer

Electrons returning to lower energy levels

Question 15

Which of the following best explains why the energy difference between $$n=1$$ and $$n=2 is $$greater than between $$n=5$$ and $$n=6$$?

Accepted Answer

Energy levels are closer together at higher $$n$$ values

Bohr Model and Electron Transitions: Absorption and Emission

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