Question

question 9 (1 point) which of the following is the electron configuration for oxygen? a 2p^8 b 1s^1 2s^1 3s^6 c 2s^2 2p^6 d 1s^2 2s^2 2p^4

Explanation:

Oxygen has an atomic number of 8, meaning it has 8 electrons. Electrons fill orbitals in a specific order following the Aufbau principle, Pauli - exclusion principle, and Hund's rule. The first two electrons go into the 1s orbital ($1s^2$), the next two into the 2s orbital ($2s^2$), and the remaining 4 into the 2p orbital ($2p^4$).

Answer:

D. $1s^{2}2s^{2}2p^{4}$