Advertisements
Advertisements
Question
Which of the following in Fig. 4.2 do not represent Bohr’s model of an atom correctly?
Options
(i) and (ii)
(ii) and (iii)
(ii) and (iv)
(i) and (iv)
Advertisements
Solution
(ii) and (iv)
Explanation -
Fig. (ii) contains 4 electrons in K shell and fig. (iv) contains 9 electrons in L shell which are not in accordance with Bohr’s model.
APPEARS IN
RELATED QUESTIONS
Draw a sketch of Bohr’s model of an atom with three shells.
Describe Bohr’s model of the atom.
Compare all the proposed models of an atom given in this chapter.
Name the scientists who described the arrangement of electrons in an atom.
Name the central part of an atom where protons and neutrons are held together.
An atom with 3 protons and 4 neutrons will have a valency of
Niels Bohr was Born on ______.
The atomic model based on quantum theory was first proposed by ______.
Given below are two statements:
Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement II: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below:
A particle of mass ‘m’ and charge ‘−2q’ is moving around a very heavy particle having charge ‘q’. If Bohr’s model is to be used then the orbital velocity of mass ‘m’ when it is nearest to the heavy particle is (in magnitude) (ε0 = permittivity of free space, h = Planck’s constant) ______.
