The transition from the state $n = 3$ to $n = 1$ in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from
$4 \to 2$
$4 \to 3$
$2 \to 1$
$3 \to 2$
An alpha particle colliding with one of the electrons in a gold atom loses
The possible quantum number for $3d$ electron are
What does it mean if the $\alpha -$ particle passes through the foil of gold ?
An $X-$ ray tube is operated at $50\, kV$. the minimum wavelength produced is.......$\mathop A\limits^o $
Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below $14\; K$.) What results do you expect?