The nature of charge on resulting colloidal particles when $$FeCl_3$$ is added to excess of hot water is:

When $$FeCl_3$$ is added to excess of hot water, it undergoes hydrolysis to form a colloidal solution of ferric hydroxide ($$Fe(OH)_3$$):

$$FeCl_3 + 3H_2O \to Fe(OH)_3 \, (colloid) + 3HCl$$

The colloidal particles of $$Fe(OH)_3$$ preferentially adsorb $$Fe^{3+}$$ ions from the solution onto their surface (since $$Fe^{3+}$$ is a common ion with the lattice of the colloid). This adsorption of positive $$Fe^{3+}$$ ions imparts a positive charge to the colloidal particles.

Therefore, the resulting colloidal particles carry a positive charge.

The correct answer is Option (1): positive.