What is the symbol for an ion which has 8 protons and 10 electrons?
O F-1
ON-3
Cr-1

here is the perfect answer :O^-2

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.