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The answer to your question is: Element B

Explanation:

Ionization energy is the amount of energy needed to remove one electron from the outermost shell of an atom.

Ionization energy increases from bottom to top and from left to right. That means that smaller atoms have a greater ionization energy.

Element B, is the one with the lowest ionization energy because it is in the left part of the periodic table.

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.