Question

how is this model useful?
○ it shows how electrons are distributed in the shells of an iron atom.
○ it shows how electrons are distributed in the shells of a cobalt atom.
○ it shows how orbitals are distributed in the shells of an iron atom.
○ it shows how orbitals are distributed in the shells of a cobalt atom
mark this and return

Explanation:

The model is an electron shell model. Iron has an atomic number of 26, and its electron configuration (2, 8, 14, 2) can be represented by such a shell - like model showing electron distribution in shells. The first option is too general, cobalt has an atomic number of 27, and the model shows electron shells (not orbitals in the way the wrong options suggest). So the correct option is the one about iron atom's electron shell distribution.

Answer:

B. It shows how electrons are distributed in the shells of an iron atom.