Atomic Structure and Radioactivity - SS1 Physics Past Questions and Answers - page 3

The Bohr Model, proposed by Niels Bohr, describes the behaviour of electrons in an atom. According to this model, electrons orbit the nucleus in specific energy levels or shells. The electrons can transition between these energy levels by absorbing or emitting energy in the form of photons. The energy levels are quantized, meaning electrons can only occupy specific energy states. The model also suggests that electrons closer to the nucleus have lower energy levels, and as the distance from the nucleus increases, the energy levels increase. The Bohr Model successfully explains the emission spectrum of hydrogen and provides a basic understanding of atomic structure.