You are presented with the question "What will be formed if a neutral atom loses an electron?" and the following answer choices: 
- nucleus
 - an object
 - calcite
 - electrically
 - leukemia
 - an anion
 - iron
 - coal

Now knowing that if a neutral atom loses an electron then an atom with a negative charge will be formed and an anion is a negatively charged atom, choose the best answer.


 

      an anion   