Which of the group of elements do the atoms gain electrons most easily? (A) 1 (B) 2 (C) 16 (D) 18

The atoms that gain electrons most easily belong to group 16, also known as the chalcogens. Elements like oxygen and sulfur in this group have a strong tendency to gain two electrons to achieve a full outer electron shell, making them highly reactive and eager to form compounds. On the other hand, group 18, the noble gases, are the least likely to gain electrons as they already have a full set of electrons in their outer shell. This makes them very stable and generally unreactive. So, while group 16 eagerly snags electrons, group 18 sits back and relaxes!