The Bohr model is useful.
The Bohr model remain useful to explain the atomic structure to nonspecialists or students in lower grades.
the planetary model
Positive ions in a crystal repel each other
because it was only useful for predicting an element with only one electron
These are atoms of carbon.
The Bohr model remain useful to explain the atomic structure to nonspecialists or students in lower grades.
It will show precise location of electron during orbital.
the planetary model
A calotte model is a space-filling model - a three-dimensional molecular model where the atoms are represented by spheres whose radii are proportional to the radii of the atoms.
because it was only useful for predicting an element with only one electron
Positive ions in a crystal repel each other
atoms
This is a structural model.
This is the Rutherford model.
Not useful
These are atoms of carbon.
These are atoms of carbon.