How do you write the electron configuration for helium?
Answer: The electron configuration for helium is 1s2.
Explanation: The electron configuration represents the arrangement of electrons in the energy levels (shells) and subshells of an atom. Helium (He), with an atomic number of 2, has only two electrons. According to the Aufbau principle, electrons fill the lowest energy levels first. In helium’s case, both of its electrons occupy the 1s subshell. Read More…