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प्रश्न
In the figure given alongside
(a) Name the shells denoted by A,B, and C. Which shell has least energy
(b) Name X and state the charge on it
(c) The above sketch is of …………. Model of an atom
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उत्तर
(a) A is for K shell or I shell.
B is for L shell or II shell.
C is for M shell or III shell.
Shell K has the minimum amount of energy.
(b) X is a nucleus; it is positively charged.
(c) The above sketch is of Bohr model of an atom.
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संबंधित प्रश्न
Compare all the proposed models of an atom given in this chapter.
Name the central part of an atom where protons and neutrons are held together.
What are the various letters used by Bohr to represent electron shells in an atom?
Explain the postulates of Bohr’s atomic model.
Which of the following in Fig. 4.2 do not represent Bohr’s model of an atom correctly?
Niels Bohr was Born on ______.
The atomic model based on quantum theory was first proposed by ______.
Bohr's model of atoms ______.
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) ______.
