Answer:
rotor
Explanation:
The part of the motor being pointed to is called the <em>rotor</em>.
Cobalt has an atomic number of 27, which means that its atoms have 27 protons in their nuclei. In a neutral cobalt atom, there is also 27 electrons. The ground state<span>electron </span>configuration<span> of cobalt is [Ar]3d74s2 .</span>
I think B. As an idea is just a way that could be possible