Question
Physics Question on Alpha-Particle Scattering And Rutherford’S Nuclear Model Of Atom
Given below are two statements :
Statement I : Most of the mass of the atom and all its positive charge are concentrated in a tiny nucleus and the electrons revolve around it, is Rutherford’s model.
Statement II : An atom is a spherical cloud of positive charges with electrons embedded in it, is a special case of Rutherford’s model.
In the light of the above statements, choose the most appropriate from the options given below.
A
Both statement I and statement II are false
B
Statement I is false but statement II is true
C
Statement I is true but statement II is false
D
Both statement I and statement II are true
Answer
Statement I is true but statement II is false
Explanation
Solution
- According to Rutherford’s atomic model, most of the mass of the atom and all its positive charge are concentrated in a tiny nucleus, and the electrons revolve around it.
- According to Thomson’s atomic model, the atom is a spherical cloud of positive charge with electrons embedded in it.
- Hence: - Statement I is true as per Rutherford’s model. - Statement II is false because it is Thomson’s model, not Rutherford’s.
The Correct Answer is: Statement I is true but statement II is false