MCQ
The electronic configuration of four elements are
$(I)\,[Xe]\, 6s^1$ $(II)\,[Xe]\,4f^{14}\,5d^1\,6s^2$
$(III)\,[Ar]\,4s^2\,4p^5$ $(IV)\,[Ar]\,3d^7,\,4s^2$
Select the incorrect statement about these elements
- A$(I)$ is a strong reducing agent
- ✓$(II)$ is a $d-$ block element
- C$(III)$ has high electron affinity
- D$(IV)$ exhibits variable oxidation state
