Question

2. There are many atomic models a) Who proposed nuclear model of atom. (1) b) Give one limitation of the above model.​

Answer 1

Answer:

Rutherford model

Explanation:

Limitation

1. he could not explain the stability of an atom

pls follow

Answer 2

Concept:

Rutherford's Atomic Model (Also known as "Nuclear Model of Atom")

Answer and Explanation:

a) Nuclear Model of Atom was proposed by Ernest Rutherford in 1911 with the help of famous gold foil experiment.

b) The limitation of the above model is that it cannot explain the line spectrum of atoms.

In Rutherford's model, due to the continuously changing radii of the circular orbits of electrons, the frequency of revolution of the electrons must also be changing. As a result, electrons will radiate electromagnetic waves of all frequencies, that is, the spectrum of these waves will be continuous in nature. But experimentally the atomic spectra are not continuous; they have many sharp lines and each spectral line corresponds to a particular frequency. So, an atom should radiate waves of some definite frequencies only, not of all frequencies. Thus, Nuclear model of atom was unable to explain the line spectrum.

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