what is the electron configuration for helium (he)?\n1s^1\n1s^2\n1s^22s^1\n1s^22s^2
what is the electron configuration for helium (he)?\n1s^1\n1s^2\n1s^22s^1\n1s^22s^2
Answer
Brief Explanations:
Helium has an atomic number of 2, meaning it has 2 electrons. Electrons fill the lowest - energy orbitals first. The 1s orbital can hold a maximum of 2 electrons. So, the electron configuration of helium is $1s^{2}$.
Answer:
B. $1s^{2}$