Question

Explain why the two given electron configurations are not possible

a.) 1s^{2} 2s^{2} 2p^{7}
b.) 1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{1} 3d^{1}

Answer 1

Answer:

Because they are violating Pauli exclusion principle and hunds rule

Explanation:

• The first electronic configuration is not possible because it is violating pauli exclusion principle P orbital have only three subshells so it should be filled with 6 electrons only so it is not possible
• The second one is also not possible because it is violating aufbau because it is not building energy without 4s fully filled it went to 3d so it is not possible

MARK ME AS A BRANLIEST