K_(α) wavelength emitted by an atom of atomic number Z=11 is λ. Find the atomic number for an atom that emits K_(α) radiation with wavelength 4λ

Question

K_(α) wavelength emitted by an atom of atomic number Z=11 is λ. Find the atomic number for an atom that emits K_(α) radiation with wavelength 4λ.

MARKS Content Team · Accepted Answer

Correct answer: (A) Z=6. 1/(λ) ∝ z-1^2 ^() ∴ (λ_1)/(λ_2) = (z 2 - 1^2)/(z 1 - 1^2) 1/4 = Z 2 - 1 1 1 - 1^2 Solving this, we get, Z_2 = 6

$K_{α}$ wavelength emitted by an atom of atomic number $Z = 11$ is $λ$ . Find the atomic number for an atom that emits $K_{α}$ radiation with wavelength $4 λ$ .