You are presented with the question "If the smallest unit of an element is neutral and it loses an electron what charge is formed?" and the following answer choices: 
- positive
 - nucleus
 - negative
 - energy
 - Energy.
 - iron
 - electrically
 - uncontrolled

Now knowing that if a neutral atom loses an electron then an atom with a negative charge will be formed and atoms are the smallest units of elements, choose the best answer.


 

   negative      