An alpha particle colliding with one of electrons in a gold atom loses

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12.Atoms

easy

An alpha particle colliding with one of the electrons in a gold atom loses

Most of its momentum

About $\frac{1}{3}$ rd of its momentum

Little of its energy

Most of its energy

Solution

(c)

The mass of an electron is hundred of times lesser than the mass of an alpha particle. Hence the alpha particles does not transfer much of its energy on collision with the electron.

Standard 12

Physics

The ratio between total acceleration of the electron in singly ionized helium atom and hydrogen atom (both in ground state) is

normal

Show the trajectory of $\alpha -$ particle of different impact parameter and using it how did Rutherford determine the upper limit of the nuclear size ?

hard

Ionization potential of hydrogen atom is $13.6 V$. Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy $12.1 eV.$ The spectral lines emitted by hydrogen atoms according to Bohr's theory will be

normal

State the limitations of plum pudding model of the atom.

medium

According to the classical electromagnetic theory, calculate the initial frequency of the light emitted by the electron revolving around a proton in hydrogen atom.