2points
what is a superconductor?
a. a conductor that allows electricity to flow easily
o
b. a conductor that conducts electricity faster than common metals
o
c. a conductor that operates at room temperature
o
d. a conductor that allows electricity to flow through nonmetal solids

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?