Total number of elements which are present in a row on the periodic table between those elements, whose wavelength of Kα lines are equal to 250 and 179 pm are (Rydberg constant = 1.097 × 107 m- 1 )

Question

Total number of elements which are present in a row on the periodic table between those elements, whose wavelength of Kα lines are equal to 250 and 179 pm are (Rydberg constant = 1.097 × 107 m- 1 ) (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Wavelength of Kα line is given by λ =(4/3 R (Z - 1)2) For λ , between 250 and 179 pm three elements are possible ( Z = 24 , 25 and 26 ).

Q. Total number of elements which are present in a row on the periodic table between those elements, whose wavelength of $K_{α}$ lines are equal to $250$ and $179 p m$ are (Rydberg constant = $1.097 \times 1 0^{7} m^{- 1}$ )

Wavelength of $K_{α}$ line is given by
$λ = \frac{4}{3 R ( Z - 1 ) ^{2}}$
For $λ$ , between $250$ and $179 p m$ three elements are possible
( $Z = 24$ , $25$ and $26$ ).

Q. Total number of elements which are present in a row on the periodic table between those elements, whose wavelength of Kα​ lines are equal to 250 and 179pm are (Rydberg constant = 1.097×107m−1 )

Wavelength of Kα​ line is given by λ=3R(Z−1)24​ For λ , between 250 and 179pm three elements are possible ( Z=24 , 25 and 26 ).

Q. Total number of elements which are present in a row on the periodic table between those elements, whose wavelength of $K_{α}$ lines are equal to $250$ and $179 p m$ are (Rydberg constant = $1.097 \times 1 0^{7} m^{- 1}$ )

Wavelength of $K_{α}$ line is given by
$λ = \frac{4}{3 R ( Z - 1 ) ^{2}}$
For $λ$ , between $250$ and $179 p m$ three elements are possible
( $Z = 24$ , $25$ and $26$ ).