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Introduction of Atomic Structure

Question 13 T...

Question

Question 13
The first model of an atom was given by

(a) N. Bohr
(b) E. Goldstein
(c) Rutherford
(d) J.J. Thomson

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Solution

The answer is (d).
The first model of an atom was given by JJ Thomson. According to him, an atom consists of a sphere of positive charge with negatively charged electrons embedded in it.

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Q. The first model of an atom was given by :

(a) Neils Bohr

(b) Ernest Rutherford

(c) J.J. Thomson

(d) Eugen Goldstein

What is the difference in the atomic models of J.J Thomson and Rutherford??

The subatomic particle called electron was discovered by :

(a) J.J. Thomson

(b) Neils Bohr

(c) James Chadwick

(d) E. Goldstein

Which sub-atomic particle was discovered by

(a) Thomson (b) Goldstein (c) Chadwick.

Answer the following questions.

(a) What is the difference between the models of the atom proposed by Thomson and by Rutherford?

(b) What is the characteristic property of the element hydrogen?

(c) What is meant by valency?

(d) What is meant by atomic mass number?

(e) Name the fundamental particles in an atom.

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