Final answer:
Non-metals are the type of elements that usually become anions as they gain electrons to form negatively charged ions with the electron configurations of noble gases.
Step-by-step explanation:
The type of elements that usually become anions are B) Non-metals. Non-metals tend to gain electrons to achieve the electron configuration of the next noble gas in the periodic table, resulting in a negatively charged ion known as an anion. This is because non-metals typically have higher electronegativities and more valence electrons compared to metals, allowing them to more easily attract and gain electrons.
For example, non-metals in Group 17 gain one electron to become anions with a -1 charge, while those in Group 16 form anions with a -2 charge, and Group 15 non-metals form anions with a -3 charge.