Question

Which electronic level would allow the hydrogen atom to absorb a photon but not to emit it?

Answer 1

Electronic level that allows hydrogen atom to absorb a photon but not to emit it:

• Hydrogen is denoted by the letter $\mathrm{H}$ and has an atomic number of $1$.
• Hydrogen has an $1{\mathrm{s}}^1$ electronic configuration.
• Only one energy level is present in hydrogen. $1\mathrm{s}$ is the lowest energy level.
• The hydrogen atom's electronic state of $1\mathrm{s}$ allows it to absorb but not release photons.
• Electrons are moved from the 1s level to a higher level, such as $2\mathrm{s}$ or $3\mathrm{s}$, while absorbing radiation.
• However, in order to release a photon, the electron must descend from a higher energy level to a lower energy level.
• Since $1\mathrm{s}$ is the lowest energy level, the electron cannot go lower than that. As a result, no emission is feasible.