The Quantum Mechanical model of the atom states that the location of the electrons around the atom cannot be precisely determined. The region where the electron can probably be found is known as the electron cloud.
Bohr's model explains how electron transitions cause hydrogen's atomic emission spectra. The quantum model is a 3-d view of the atom, which shows an electron's energy levels and sublevels and the probability of an electron's location, proven with complex mathematics.
According to the modern theory of quantum mechanics the electrons have a vibrating wave character and hence uncertain positions.Sometimes,they are close to the nucleus and sometimes away from it.Thus we can say that the paths of motion of electrons around the nucleus are not definite
No, the Bohr model does not work for all elements. It accurately describes the electronic structure of hydrogen and other single-electron systems, but it fails to explain the behavior of multi-electron atoms. Instead, a more complex quantum mechanical description, such as the Schrödinger equation, is required to accurately describe the electronic structure of all elements.
The Electron Cloud model
Rotating around the nucleus.
the most probable location of an electron
The Bohr model of the atom describes the electrons as orbiting the nucleus in a stable circular path. The quantum mechanical model describes a probability cloud for the electron's position with respect to the nucleus, the shape of the cloud, any special orientations and the spin of the electron.
the most probable location of an electron
magnetic quantum number
The atomic model used today, known as the quantum mechanical model, incorporates the principles of quantum mechanics including the concept of electron clouds and probability distributions of electron locations, while Bohr's model focused on specific orbits for electrons. The quantum mechanical model provides a more accurate description of electron behavior and allows for a better understanding of the complexities of atomic structure.
n=1
Distance depends on the principal quantum number n.