Q. 234.7( 7 Votes )

Describe B

Answer :

The present concept of atom was given by Neils Bohr. The bohr’s model of atom can be described as follows:

1) An atom is made up of three particles, called as electrons, protons and neutrons.


2) The protons and neutrons are located in a small nucleus at the centre of the atom.


3) The electrons revolve rapidly round the nucleus in fixed circular paths called energy levels or shells.


4) There is a limit to the number of electrons which each energy level (or shell) can hold.


5) Each energy level (or shell) is associated with a fixed amount of energy.


6) There is no change in the energy of electrons as long the keep revolving in the same energy level, and the atom remains stable.

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