The absorption transitions between the first and the fourth energy states of hydrogen atom are $3.$ The emission transitions between these states will be
$3$
$4$
$5$
$6$
In 1911 , the physicist Ernest Rutherford discovered that atoms have a tiny, dense nucleus by shooting positively charged particles at a very thin gold foil. A key physical property which led Rutherford to use gold was that it was
Which scientist gave plum pudding model of the atom ?
What is head-on collision ? For that tell the impact parameter.
An $\alpha$- particle of $5\ MeV$ energy strikes with a nucleus of uranium at stationary at an scattering angle of $180^o$. The nearest distance upto which $\alpha$- particle reaches the nucleus will be of the order of
The transition from the state $n = 4$ to $n = 3$ in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition