Atoms of which group of elements have seven electrons in the outer shell?
A) Noble gases
B) Alkali metals
C) Alkaline earth metals
D) Halogens

Question

Quizplus · Accepted Answer

Halogens, which are found in Group 17 (VIIA) of the periodic table, have seven electrons in their outermost shell. This configuration makes them highly reactive, as they tend to gain one electron to achieve a stable noble gas electron configuration.

Atoms of Which Group of Elements Have Seven Electrons in the Outer