Paschen Series Transition | ?(nm) | ?(nm) | UV, VIS, (nt-m) measured! calculated
ID: 1037981 • Letter: P
Question
Paschen Series Transition | ?(nm) | ?(nm) | UV, VIS, (nt-m) measured! calculated ! or 1R 3-4 11875 1282 1094 1005 954.6 1820.4 9-6 Ionization Energy, kJ/mol 00+-3 Brackett Series Transition | ? (nm) | I measured i calculated | | UV, VIS, or IR ? (nm) (n-m) 4-5 4051 2625 72166 1944 1458 4-6 Ionization Energy, kJ/mol 4+-8 00-4 Pfund Series Transition | ? (nm) | ? (nrn) | UV, VIS, (n-m) measured calculated or IR 5-6 7460 5-7 4654 3741 o-52279 Ionization Energy, kJ/mol Humphreys Series Transition | ? (nm) | ? (nm) | UV, VIS, (n-m) measured calculated or IR 6-7 6--8 00+-6 12370 |7503 | 3282 Ionization Energy, k.J/mol How well do the calculated values match the measured values for the emission atom? spectrum of a hydrogen 'Values for the measured spectrum of hydrogen come from WikinedinExplanation / Answer
Using formula,
energy dE = (-2.18 x 10^-18)(1/nf^2 - 1/ni^2)
wavelength (l) = planck's constant (h) x speed of light(c)/dE
R = Rydberg constant
For Paschen series,
n = 4 to n = 3
wavelength (l) = 6.626 x 10^-34 x 3 x 10^8/-(-2.18 x 10^-18(1/3^2 - 1/4^2))
= 1876 nm (IR)
n = 5 to n = 3
wavelength (l) = 6.626 x 10^-34 x 3 x 10^8/-(-2.18 x 10^-18(1/3^2 - 1/5^2))
= 1282 nm (IR)
Similarly others can be done
Calculations match well with the measured values
electromagnetic region,
10nm - 400 nm : UV
400 nm to 800 nm : visible
> 800 nm : IR