How many energy rays of $\alpha -$ particles emitted from $_{83}^{214}Bi$ were taken?
Difference between nth and $(n +1)^{th}$ Bohr’s radius of $‘H’$ atom is equal to it’s $(n-1)^{th}$ Bohr’s radius. the value of $n$ is:
For principal quantum number $n = 3$, the possible values of orbital quantum number $‘l’$ are
Which one of the relation is correct between time period and number of orbits while an electron is revolving in a orbit
An alpha particle colliding with one of the electrons in a gold atom loses