Question

electron filling rules

Answer 1

A) There can only be 2 electrons in 1 orbital, that configuration has 3 elections in the 2s orbital. The correct configuration should be\[B: 1s^2 2s^2 2p^1\]B) This one violates Hund's rule, which states that every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied. The correct configuration should be\[N: 1s^2 2s^2 2 P_x^1 2P_y^1 2P_z^1\]C) The 4s orbital comes before the 3d orbitals. The correct configuration should be\[K: [Ar] 4s^1\]D) After 4s should be the 3d orbitals. The correct configuration should be\[Ti: [Ar] 4s^2 3d_{z^2}^1 3d_{xz}^1\]