The element "S" refers to sulfur. The atomic number of sulfur is 16, meaning it has 16 electrons. The electron configuration for sulfur is: \[ 1s^2 2s^2 2p^6 3s^2 3p^4 \] This corresponds to the first option, which shows sulfur's correct electron configuration.
The correct option is (A): \(1s^2 2s^2 2p^6 3s^2 3p^4\)
| List-I Tetrahedral Complex | List-II Electronic configuration |
|---|---|
| (A) TiCl4 | (I) e2, t20 |
| (B) [FeO4]2- | (II) e4, t23 |
| (C) [FeCl4]- | (III) e0, t22 |
| (D) [CoCl4]2- | (IV) e2, t23 |