Q: Which atomic model shows that the distances of electrons from the nucleus is not a fixed value?


Read this paragraph and choose the correct option from the provided answers:

In the Bohr model, the atom is viewed as a densely packed nucleus comprised of neutrons and protons that is surrounded by electrons at fixed distances, which correspond to specific energy levels. However, the quantum model showed that the distances between electrons and the nucleus are not really fixed. Due to their wave-like nature, we cannot pinpoint the exact location of an electron that is in motion, but we can determine the probability that a given electron will be in a particular region in three-dimensional space. Schrӧdinger’s equations are used to determine the position of a specific electron with respect to a nearby nucleus. The region in space in which an electron is most likely to be found is referred to as an orbital .

 Choices:

- the electron model

- the distance model

- the equivocation model

- the quantum model


A:
the quantum model