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
Draw a sketch of Bohr’s model of an atom with three shells.
Compare all the proposed models of an atom given in this chapter.
Name the scientists who described the arrangement of electrons in an atom.
Describe Bohr's model of the atom. How did Neils Bohr explain the stability of atom?
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
Explain the postulates of Bohr’s atomic model.
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) ______.
