The Modern Atomic Theory

Question 1

Which are aspects covered by Bohr’s atomic model?

Revolt · Accepted Answer

Electrons can have a measured radius.; Electrons do not have energy, the energy is determined by the orbit.

Question 2

Describe how the Bohr model explains both of these observations.

Revolt · Accepted Answer

In the Bohr model, electrons can exist only in specific energy levels. When an atom absorbs energy, an electron jumps to a higher energy level. When it falls back to a lower level, it emits light. The wavelength of this light corresponds to the specific energy difference between the levels. Because every element has a unique set of energy levels, each element produces a unique emission spectrum.

Question 3

Which statements are true of the electron cloud model? Check all that apply.

Revolt · Accepted Answer

It is considered the modern atomic model.; It describes the probable locations of the electrons.

Question 4

Compare the modern (electron cloud) model of the atom with Bohr’s atomic model. Which of these statements describe the two models correctly? Check all of the boxes that apply.

Revolt · Accepted Answer

Bohr’s model electrons cannot exist between orbits, but in the electron cloud model the location of the electrons cannot be predicted.; The modern model explains all available data about atoms; Bohr’s model does not.

The Modern Atomic Theory Answers

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