How many electrons are in Helium’s outermost shell?
Answer: Helium’s outermost shell contains 2 electrons.
Explanation: Helium (He) has a total of 2 electrons, and both of these electrons are located in its first and only energy shell, which is also its outermost shell. The electron configuration of helium is 1s2, indicating that it has two electrons in the 1s subshell. Read More…