Atomic Models

IMPORTANT

Atomic Models: Overview

This topic covers concepts such as Atomic Models, Thomson's Atomic Model, Failure of Thomson's Atomic Model, Rutherford's Nuclear Model of Atom : Discovery of Nucleus, Conclusions of Rutherford's Gold Foil Experiment, etc.

Important Questions on Atomic Models

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Give any two limitations of Thomson's atomic model.

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Give the number of atomic models. Explain briefly Bohr's atomic model.

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Give the number of atomic models. Explain briefly Rutherford's atomic model.

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Why the Rutherford model cannot explain the stability of an atom?

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Rutherford’s Nuclear Model of Atom model is that the mass of the atom is assumed to be uniformly distributed over the atom.

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The nucleus is surrounded by electrons that move around the nucleus with a very high speed in circular paths called _____.

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An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is

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Write the drawbacks of Rutherford's atomic model.

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Name the element whose isotope has mass number 14 and 8 neutrons.

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An atom having atomic mass number 13 has 7 neutrons. What is the atomic number of the atom?

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Which of the following statements represent an incorrect limitation of Thomson's Atomic model?

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Thomson's atomic model fails to explain the results of scattering experiments, carried out by _____.

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Give the limitations of Thomson's model of an atom.

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The number of protons, neutrons and electrons in 71175Lu, respectively, are

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Deuterium is the lightest isotope of Hydrogen.

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Isotopes of an element have 

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Deuterium nucleus contains

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Frequency of the X-rays emitted by an element is 100 s-1. If constants in the Moseley equation are a=b=1, the element will be

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Number of protons, neutrons and electrons in the element  Ac89  281 are respectively:

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_____ suggested that the atom has a heavy and positively charged nucleus. (Ernest Rutherford/ James Chadwick)