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Chapter 37: Q 9. (page 1081)

Once Thomson showed that atoms consist of very light negative electrons and a much more massive positive charge, why didn鈥檛 physicists immediately consider a solar-system model of electrons orbiting a positive nucleus? Why would physicists in 1900object to such a model?

Short Answer

Expert verified

Scientists at that time could not imagine the extremely high density of the tiny nucleus. They also had no idea what would hold protons together in a nucleus when there was a known repulsive force between protons.

Step by step solution

01

Given Information

It is given that once Thomson showed that atoms consist of very light negative electrons and a much more massive positive charge.

02

Explanation

Physicists immediately didn't consider a solar-system model of electrons orbiting a positive nucleus because Scientists at that time could not imagine the extremely high density of the tiny nucleus .they also had no idea what would hold protons together in a nucleus when there was a known repulsive force between protons. In addition, classical electromagnetic theory predicted that an accelerating electron would radiate away all its energy in microseconds and collapse into the nucleus.

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Most popular questions from this chapter

An oil droplet with 15excess electrons is observed between two parallel electrodes spaced 12mm apart. The droplet hangs motionless if the upper electrode is25V more positive than the lower electrode. The density of the oil is 860kg/m3. What is the radius of the droplet?

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(a) Determine the Balmer formula n and m values for these wavelengths.

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