Q1 of 22 Page 113

Based on the Thomson’s model of an atom, say which of the following statements are correct.

i) The positive charge is assumed to be uniformly distributed over the atom.


ii) The electrons are uniformly distributed in the positively charged sphere.


iii) The electrons attract each other to stabilize the atom.


iv) The mass of the atom is assumed to be uniformly distributed over the atom.


a) (i) ,(ii) and (iv) b) (i),(ii) and (iii) c) (i) and (iii)

(a)

According to Thompson’s model, an atom consists of uniformly distributed positive charge (protons) and the electrons are embedded in this sphere of the atom. The electrons do not attract each other, instead, they repel. Mass of the atom is given by the protons, hence it is uniformly distributed over the surface.


More from this chapter

All 22 →
1

Which one of the following is a wrong statement, regarding the postulates of Dalton’s Atomic Theory?

a) The matter is made up of small indivisible particles called atoms.


b) Atoms of the same element are different in all respects.


c) Atoms of different elements are different in all respects.

 1

Dalton’s Atomic Theory successfully explained the Law of ______.

i) Conservation of Mass


ii) Definite Proportions


iii) Radioactivity


iv) Multiple Proportions


a) (i), (ii) and (iii) b) (i), (iii) and (iv) c) (i) ,(ii) and (iv)

 2

Fill in the blanks:

1. ______is a negatively charged particle. (Electron/Proton)


2. Proton is deflected towards the___ charged plate. (positively, negatively)

 3

Match the entries of column I with the appropriate entries of column II and column III: (Double matching)