One of the emission spectral lines for be3+ has a wavelength of 253.4 nm for an electronic transition that begins in the state with n=5. what is the principal quantum number of the lower-energy state corresponding to this emission?

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.