Ns Classify the following reactions as synthesis, decomposition, Single replaceme,
replacement or combustion.
Description
Type of Reaction
synthesis, decomposition,
single replacement,
double replacement or
combustion
cl, (aq) + Nal (aq) + NaCl (aq) + 1, (s)

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?