I have done the question but it seems wrong.
Q- Using the Rydberg equation calculate the ionisation energy of an electron in the 4s orbital of hydrogen.
Ok first of all since its hydrogen I should use Rh right? So Rh= 2.18x10^-18
Now since its asking for ionization energy the first n1 value is 1
And the second n2 value im saying is 4, as its in the 4s orbital. Im not sure??
So putting this together is 2.18x10^-18 X (1/1^2 – ¼^2)
So... 2.18x10^-18 X 0.1875 = 4.08x10^-19
Now i got the frequency, Now to work out Ionization energy I obviously use E=hv where h=6.626x10^-34
So now 4.08x10^-19 X 6.626x10^-34 = 2.70x10^-52 !!!!
Is that correct? The number is incredibly small? And I don’t know whether this is the correct way of working it out for the 4s orbital , or weather all the values I have inputted are correct. I would appreciate it so much for some help