The degree of dissociation ($$\alpha$$ ) of a weak electrolyte, A_xB_y is related to van’t Hoff factor (i) by the expression :

Trichloroacetaldehyde was subjected to Cannizzaro’s reaction by using NaOH. The mixture of the products contains sodium trichloroacetate and another compound. The other compound is :

The outer electron configuration of $$Gd$$ (Atomic No. $$64$$) is :

Outer electronic configuration of Gd (Atomic no : 64) is -