Is it just me or dose anyone else cant focus bc ur thinking about someone??? like ive been thinking bout the same person for like a month already and i dont knw why bc we dont even talk anymore..but if so HOW DO I STOP THINKING OF HI

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=