CSEC Chemistry · January 2017 · Paper 1 · Question Q6

Which of the following statements BEST describes the difference between an atom and an ion?

1. (A)An atom is electrically neutral but an ion is positively charged.
2. (B)An atom is electrically neutral but an ion is negatively charged.
3. (C)An atom contains equal numbers of protons and electrons whereas an ion contains more electrons than protons.
4. (D)An atom contains equal numbers of protons and electrons whereas an ion contains unequal numbers of protons and electrons.