MCQ
Among the following least and most metallic element will be respectively :
$(I)$ $[He]\, 2s^1$ $(II)$ $[Kr]\,5s^2\,4d^{10}\,5p^5$
$(III)$ $[Xe]\,6s^1$ $(IV)$ $[He]\,2s^2\,2p^5$
$(I)$ $[He]\, 2s^1$ $(II)$ $[Kr]\,5s^2\,4d^{10}\,5p^5$
$(III)$ $[Xe]\,6s^1$ $(IV)$ $[He]\,2s^2\,2p^5$
- A$I$ and $II$
- B$II$ and $IV$
- C$III$ and $IV$
- ✓$IV$ and $III$