Question

Millikan's oil-drop experiment A. established the charge on an electron. B. showed that all oil drops carried the same charge. C. provided support for the nuclear model of the atom. D. suggested that some oil drops carried fractional numbers of electrons. E. suggested the presence of a neutral particle in the atom.

Answer 1

Millikan's oil-drop experiment served to establish the charge on an electron, using suspended oil droplets. Other options mentioned are not supported by evidence from this experiment.

Step-by-step explanation:

Millikan's oil-drop experiment primarily A. established the charge on an electron. During this experiment, Robert Millikan and Harvey Fletcher observed and measured the electric charge of tiny oil droplets. The droplets picked up and lost electrons, allowing them to quantify the charge of a single electron by observing many drops. The charge was found to be approximately -1.6 x 10^-19 Coulombs. While performing the experiment, they did not find evidence for B. all oil drops carrying the same charge, C. support for the nuclear model of the atom, D. some oil drops carrying fractional numbers of electrons, or E. presence of a neutral particle in the atom.

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Answer 2

A

Step-by-step explanation:

This popular experiment enabled us to know the charge of an electron. It was performed by Robert Millikan and Harvey Fletcher and have the process and procedure to measure the elementary electronic charge. In fact, Robert Millikan was awarded the Nobel prize in physics in the year 1923 for how efforts.

They were able to determine the charge by repeating the experiment for several droplets and later proposed that the charges were integer multiples of a particular base value.