Question

Why the presence of equal and similar charges
on colloidal particles provide
stability ?​

Answer 1

$\huge\bold\star\blue{Answer}$

The presence of equal and similar charges on colloidal particles is largely responsible in providing stability to the colloidal solution, because the repulsive forces between charged particles having same charge prevent them from coalescing or aggregating when they come closer to one another......☺

Answer 2

$\huge\bold✯\purple{Answer}$

Due to the presence of similar and equal charges, the colloidal particles repel one another and are the thus unable to combine together to form larger particles and coagulate. Hence, presence of equal and similar charge on colloidal particles provide stability to colloidal solution.