Difficulty: Medium
Average Score: 76%
Entry Exam
What occurs to an atom that has a positive charge?
Correct answer
B
Rationale
When an atom has a positive charge, it indicates that it has lost an electron. Electrons carry a negative charge, so the absence of an electron leads to a net positive charge for the atom. Gaining a proton or losing a proton would modify the atom's identity by changing its atomic number, but it would not directly result in a positive charge. Therefore, the correct response is that the atom lost an electron to acquire a positive charge.