what is the electron configuration for helium (he)?\no 1s^1\no 1s^2\no 1s^22s^1\no 1s^22s^2
what is the electron configuration for helium (he)?\no 1s^1\no 1s^2\no 1s^22s^1\no 1s^22s^2
Answer
Brief Explanations:
Helium has an atomic number of 2, meaning it has 2 electrons. Electrons fill the 1s orbital first, and the 1s orbital can hold a maximum of 2 electrons. So the electron - configuration is $1s^{2}$.
Answer:
B. $1s^{2}$