Question

The first line of paschen series for a certain hydrogen like species (ie an ion with only one electron) has a wavelenght 2085A identify the ion.?

Answer 1

How do you calculate the wavelength of spectral lines in Hydrogen?

Answer 2

Using rydberg formula

Answer 3

Which is?

Answer 4

1/lam=Rh*(1/n2-1/n'2)

Answer 5

Rh=1/lam0

Answer 6

\[ \frac{1}{\lambda} = Z^2\cdot(-13.6 eV) \cdot \left(\frac{1}{n^2} - \frac{1}{n'^2} \right) \]

Answer 7

n = 3, n' = 4. Solve for Z.

Answer 8

Yup..... i got it

Z =3 Li ^2+ thxxxx