postulates and drawbacks of rutherford's atomic model
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Rutherford model of an atom
1) An atom consist of positively charged,dense and very small nucleus containing protons and neutrons.The entire mass of an atom is concentrated in the nucleus.
2) The nucleus is surrounded by negatively charged electrons.the electrons are revolving around the nucleus in circular paths at very high speed.These circular paths of the electrons are called orbits.
3) An atom is electrically neutral because the number of protons and electrons is equal.
4) The size of nucleus is very small as compared to size of atom.
Drawback of Rutherford Model Of an Atom
He does not explain the stability of an atom.In the Rutherford’s model of an atom.
In the Rutherford’s model of an atom,the negatively charged electron revolves around the positively charged nucleus in circular path.If an object moves in a circular path,the its motion is said to be accelerated.This means that motion of an electron revolving around the nucleus is accelerated.If a charged particle undergoes accelerated motion,then it must radiate energy continuously.Thus the energy of revolving electron will decrease gradually and their speed will also go on decreasing.And ultimately the electrons should fall into the nucleus.This makes atom very unstable and hence the atom should collapse......
1) An atom consist of positively charged,dense and very small nucleus containing protons and neutrons.The entire mass of an atom is concentrated in the nucleus.
2) The nucleus is surrounded by negatively charged electrons.the electrons are revolving around the nucleus in circular paths at very high speed.These circular paths of the electrons are called orbits.
3) An atom is electrically neutral because the number of protons and electrons is equal.
4) The size of nucleus is very small as compared to size of atom.
Drawback of Rutherford Model Of an Atom
He does not explain the stability of an atom.In the Rutherford’s model of an atom.
In the Rutherford’s model of an atom,the negatively charged electron revolves around the positively charged nucleus in circular path.If an object moves in a circular path,the its motion is said to be accelerated.This means that motion of an electron revolving around the nucleus is accelerated.If a charged particle undergoes accelerated motion,then it must radiate energy continuously.Thus the energy of revolving electron will decrease gradually and their speed will also go on decreasing.And ultimately the electrons should fall into the nucleus.This makes atom very unstable and hence the atom should collapse......
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postulates are as follows:-
1. most of the mass and positive charge is concentrated in a small region called nucleus.
2.the positive charge on nucleus is due to protons.
3.Nucleus is sorrounded by electrons whicj are revolving around it at very high speed.
Failur:-
1. Rutheford model could not explain stability of atom.
2. it could not explain distribution of electron around the nucleus and there energy.
3.was unable to explain existence of certain definite line in hydrogen spectrum.
1. most of the mass and positive charge is concentrated in a small region called nucleus.
2.the positive charge on nucleus is due to protons.
3.Nucleus is sorrounded by electrons whicj are revolving around it at very high speed.
Failur:-
1. Rutheford model could not explain stability of atom.
2. it could not explain distribution of electron around the nucleus and there energy.
3.was unable to explain existence of certain definite line in hydrogen spectrum.
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