Why was Thomson’s Model of an atom failed?

i. It could not explain the screening of negative charges from that of positive

ii. It did not tell about the presence of electrons

iii. It did not give an idea about the position of the nucleus

iv. It explained the atom as a whole to be electrically neutral.

Only (iii)

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Both (i) & (iii)

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Only (i)

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Both (ii) & (iv)

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Solution

The correct option is B

Both (i) & (iii)

Thomson model of an atom could not explain the stability of an atom, i.e., how a positive charge in the atom holds the negatively charged electrons. It could not explain the position of the nucleus in an atom and the scattering of alpha particles.

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Similar questions

Why was Thomson’s Model of an atom failed?

i. It could not explain the screening of negative charges from that of positive

ii. It did not tell about the presence of electrons

iii. It did not give an idea about the position of the nucleus

iv. It explained the atom as a whole to be electrically neutral.

Q. One reason the Bohr model of the atom ultimately failed was because it did not explain why?

Q. An early model for an atom considered it to have a positively charged nucleus of charge

Z e

surrounded by a uniform density of negative charge up to a radius

R

. The atom as a whole is neutral. For this model, what is the electric field at a distance

r

from the nucleus, where

r > R

As nucleus is positively charged and electron is negatively charged in an atom , both of them having opposite charges then why they did not attract each other.

Q. An early model for an atom considered it to have a positively charged point nucleus of charge

Z e

, surrounded by a uniform density of negative charge upto a radius

R

. The atom as a whole is neutral. The electric field at a distance

r

from the nucleus is

(r < R)

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The correct option is B Both (i) & (iii) Thomson model of an atom could not explain the stability of an atom, i.e., how a positive charge in the atom holds the negatively charged electrons. It could not explain the position of the nucleus in an atom and the scattering of alpha particles.

The correct option is B

Both (i) & (iii)

Thomson model of an atom could not explain the stability of an atom, i.e., how a positive charge in the atom holds the negatively charged electrons. It could not explain the position of the nucleus in an atom and the scattering of alpha particles.