Question

Campare all the proposed models of an atom as per NCRT's chapter 4

Answer 1

hey

________________

models are

thomson model of atom

________________________

he said atom is spherical in shape with negative charges electrons embedded in it

both electrons and protons are equal in magnitude and hence atom is electrically neutral

rutherford atomic model

_________________________

1. atoms consist of a positively charged ,dense and a very small nucleus containing electrons and protons inside it and all the mass of atom is concentrated inside the nucleus

2. nucleus is surrounded by negatively charged particles called electron which revolves in a circular orbit with very high speed

3. the electrostatic attraction  between nucleus and negatively charged particles electrons holds the atom together

4. most of space inside the atom is empty

5. an atom is electrically neutral

bohr atomic model

______________________

1. atom is made up of three subatomic particles called electrons,protons,neutrons

2.protons and neutrons are located at the centre in the nucleus

3.electrons revolve around the nucleus in  fixed circular orbits called energy level or shell

4.each cell can hold fixed no of electrons

5.each energy cell has fixed amount of energy

hope helped

________________