Advertisements
Advertisements
प्रश्न
Name the central part of an atom where protons and neutrons are held together.
Advertisements
उत्तर
The nucleus is the central part of an atom where protons and neutrons are held together.
APPEARS IN
संबंधित प्रश्न
Compare all the proposed models of an atom given in this chapter.
What are the various letters used by Bohr to represent electron shells in an atom?
Describe Bohr's model of the atom. How did Neils Bohr explain the stability of atom?
Give the postulates of Bohr's atomic model
State in brief the drawbacks of Rutherford's atomic model correlating them with the postulates of Bohr’s atomic model.
State true or false. If false, correct the statement.
Smaller the size of the orbit, lower is the energy of the orbit.
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) ______.
The angular momentum of electron in hydrogen atom in first orbit is ‘L’. The change in angular momentum if electron is in second orbit of hydrogen atom is ______.
