Solve the following problems given that 1. h = 6.626 x 10-34 joule second; and
2. c = 2.998 x 108 meters/second.

A photon has a wavelength of 3.8 x 107 meters, which is between visible and ultraviolet. Calculate the energy
of this photon.

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!