Question

differences between Rutherford and bohr's model of atom.
great explanation..

Answer 1

Hey there,

Rutherford's atomic model-In 1911, after the discovery of elementary particles, Ernest Rutherford took a gold foil of 10 mm thickness and bombarded it with αparticles. α particles has a nucleus identical to Helium and quite bigger than electron(7500 times). When the α particles hit the gold foil most of it passed or got very less defelcted. Only 1 out of every 18000 particles rebounded.
This gave the idea that an atom has large amount of free space.
His idea was discarded because according to him, the path electron was spiral and not circular so it merged with the nuclei after a few turns. According to this, the atom would be highly unstable.

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Bohr's atomic model-According to Neils Bohr, a positively charged mass called nuclei had concentric shells around them. In this way, the electrons would revolve around the nuclei but will not fuse. The path of electrons never meet. This ensured the stability of nuclei and this is what we study nowadays.

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Answer 2

hi friend

here your answer looking for

thanks to ask this question

Before Rutherford Model there are many types of model which came infront of us. One of them was Thomson's model of atom.
In this model the atom consists of sphere of positive charge with negatively charged electron embedded in it.
the positive charge and the negative charge are equal in magnitude due to which atom is electrically neutral.

but this model was rejected by Rutherford.

so by the experiment of gold foil Rutherford give his model of atom.

he has taken a thin gold foil, that has the thickness of 1000 atoms.

then he passed the Alpha particle to strike that thin gold foil in vacuum.

he was amazed to see that sum of Alpha particle get passed to that foil ,some get deflected and even some get bounced back.

so he concluded that the atom of that gold must have very large space between them in which some of the Alpha particle get passed through it and that deflection was because of something positively charged dense lump inside the atom.

so he make the structure of atom as follow:--

1). the nucleus of atom is positively charged and it is in the middle of atom.
its size is also very small as compared to the atom.

2). the electrons of the atom used to revolve around the nucleus with very high speed.

but later on it is rejected by some scientist because according to the electromagnetic theory if any charged particle is in the accelerated motion then it must radiate energy continuously.

so if the electron is revolving the nucleus with a very high speed then it must radiate some energy and the energy of revolving electron will decrease and speed also decrease by which it get come closer to the nucleus and finally collide with it that make the atom unstable.

but we are getting the atom in the stable form.

so there was a person named as Neil Bohr who was the student of Rutherford.
so to explain the stability of the atom , he make some postulates.

those postulates were as follows:---

1). the electron used to revolve around the nucleus in certain energy levels where each energy level has different radius.

2). and when the electron is revolving in the particular energy level around the nucleus then it doesn't radiate energy.

so, Bohr's model of atom can be explained in this way:-

1). the proton and neutron located in the nucleus.

2). all the electrons revolve around the nucleus in specific or particular energy levels.

3). energy level can be named as K M N O and P.

4). each energy level has fixed amount of energy.

this a great information about the Rutherford and bohr model of atom as you have asked.

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From brainly star Amaytripathi19.