Social Studies, 31.01.2020 10:48 prettykevahk
Oppositely charged objects attract each other. this attraction holds electrons in atoms and holds atoms to one another in many compounds. however, ernest rutherfordâs model of the atom failed to explain why electrons were not pulled into the atomic nucleus by this attraction.
what change to the atomic model solve the problem seen in rutherfordâs model?
a. bohrâs work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like standing on the rungs of a ladder.
b. bohrâs work with cathode rays led him to say that the electrons were located within the mass of positive material, like plums in a pudding.
c. thomsonâs work with cathode rays led him to say that the electrons were located within the mass of positive material, like plums in a pudding.
d. thomsonâs work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like standing on the rungs of a ladder.
Answers: 2
Social Studies, 21.06.2019 23:00
How did world war i contribute to the events leading up to world war ii? (a)germans wanted to expand their nation to regain territory in the soviet union. (b)britain and france wanted to force germany to make reparation payments. (c)germans hated the versailles treaty and supported hitler's actions to defy it. (d)the soviet union wanted to take over german territory in eastern europe.
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Social Studies, 22.06.2019 09:10
Which of the following is a problem in the health care system of the united states? a. too many doctors in rural areas b. too many doctors who are general practitioners c. fraud d. costs that are too low
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Which action would the president's political party most likely take to resolve this issue
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Commercial agriculture consists of raising food for trade and profit, while subsistence agriculture focuses on -- a. providing the basic needs of the farmer's family b. providing the basic needs of the neighboring communities c. creating more arable land for future use d. obtaining subsidies from governments and corporations
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Oppositely charged objects attract each other. this attraction holds electrons in atoms and holds at...
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