1, Which carries more energy, yellow light with a wavelength of
580 nm or green light with a wavelength of 560 nm? (Explain or show
a calculation).
2,Why do we see a characteristic color (in the flame) for each
cation?
4,The energy of an electron in n = 1 for a hydrogen atoms was
found to be -2.179 x10-18 J/atom. Convert this value to
kJ/mole.
5,Calculate the energy of light emitted when an electron changes
from n = 3 to...