Elements in group 17 (7A) of the periodic table are likely to form ions with the charge
A) (-3.)
B) (-2.)
C) (-1.)
D) +1.
E) +2.

Question

Quizplus · Accepted Answer

Group 17 elements, also known as halogens, tend to gain one electron to achieve a noble gas configuration of eight valence electrons. This results in a charge of -1 for their ions. Therefore, the correct formula for the ion of a group 17 element would be (F1F1F1S1F1F1F101). Choices A and B have the incorrect formula for a halogen ion, while choices D and E suggest that a halogen would lose electrons to form a positive ion, which is not typical for group 17 elements.

Elements in Group 17 (7A) of the Periodic Table Are