Question

the emission spectrum of hydrogen shows discrete, bright, colored lines. which characteristic of the bohr model is best supported by this observation?
energy is released when an electron moves to a higher energy level.
smaller atoms have fewer spectral lines than larger atoms.
the energy of an electron increases with distance from the nucleus.
electrons cannot exist in locations other than in specific orbits.

Explanation:

In the Bohr model, electrons are in specific orbits. When they transition between these orbits, discrete amounts of energy are emitted as photons, creating the discrete spectral lines. Energy is absorbed when an electron moves to a higher - energy level, not released. The fact that there are discrete lines supports the idea of specific electron orbits rather than a continuous range of positions. The relationship between atom size and spectral lines number is not the key point here, and while electron energy increasing with distance from the nucleus is true in the Bohr model, it doesn't directly explain the discrete lines as well as the specific - orbit concept.

Answer:

Electrons cannot exist in locations other than in specific orbits.