The wavelengths of ${K_\alpha }$ $X-$ rays of two metals $'A'$ and $'B'$ $\frac{4}{{1875R}}$ and $\frac{1}{{675R}}$ respectively, where $'R'$ is Rydberg's constant. The number of elements lying between $'A'$ and $'B'$ according to their atomic numbers is
The wavelengths of ${K_\alpha }$ $X-$ rays of two metals $'A'$ and $'B'$ $\frac{4}{{1875R}}$ and $\frac{1}{{675R}}$ respectively, where $'R'$ is Rydberg's constant. The number of elements lying between $'A'$ and $'B'$ according to their atomic numbers is
- A
$3$
- B
$6$
- C
$5$
- D
$4$
Similar Questions
The diagram shows the path of four $\alpha - $ particles of the same energy being scattered by the nucleus of an atom simultaneously. Which of these are/is not physically possible
The diagram shows the path of four $\alpha - $ particles of the same energy being scattered by the nucleus of an atom simultaneously. Which of these are/is not physically possible
What is shown by Thomson's experiments of electric discharge through gases ? And explain the plum pudding model.
What is shown by Thomson's experiments of electric discharge through gases ? And explain the plum pudding model.
In Bohr model of hydrogen atom, the force on the electron depends on the principle quantum number as
In Bohr model of hydrogen atom, the force on the electron depends on the principle quantum number as
Give a powerful way to determine an upper limit to the size of the electron.
Give a powerful way to determine an upper limit to the size of the electron.
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:
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: