The nuclear atom model put forward by Ernest Rutherfort is based on Rutherford's observation of the scattering behavior of alpha particles sent onto a thin gold plate. Which ofthe following is incorrect?3 -a) Most of the alpha particles are backscattered after hitting the gold plate.O B) Most of the positively charged alpha partieles passed through the gold plate without any seattering.NS) The nucleus, where the protons are together, occupies a very small volume.O D) The positively charged protons inside the atom are concentrated in the nucleus.O TO) Few of the positively charged alpha particles hit the gold plate and are scattered back at a large angle.

Answered: The nuclear atom model put forward by…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The nuclear atom model put forward by Ernest Rutherfort is based on Rutherford's observation of the scattering behavior of alpha particles sent onto a thin gold plate. Which of
the following is incorrect?
3 -
a) Most of the alpha particles are backscattered after hitting the gold plate.
O B) Most of the positively charged alpha partieles passed through the gold plate without any seattering.
NS) The nucleus, where the protons are together, occupies a very small volume.
O D) The positively charged protons inside the atom are concentrated in the nucleus.
O TO) Few of the positively charged alpha particles hit the gold plate and are scattered back at a large angle.

Expert Solution

Step 1

Answer - The correct option is (a)

Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

Ernest Rutherford was interested in knowing how the electrons are arranged within an atom. Rutherford designed an experiment for this. In this experiment, fast moving alpha (α)-particles were made to fall on a thin gold foil.

He selected a gold foil because he wanted as thin a layer as possible. This gold foil was about 1000 atoms thick.
α-particles are doubly-charged helium ions. Since they have a mass of 4µ, the fast-moving α-particles have a considerable amount of energy

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