Aclear colorless liquid phase sample undergoes evaporation. once the liquid is completely evaporated a white crystalline powder residue is left in the evaporating dish. this sample is best described as

a solution

Explanation:

A solution is composed of a liquid in which a solid compound (the solute) has been dissolved. Since there was a solid residue left over once the liquid component evaporated, the sample must have been a solution.

false

because it does not have the potential to be entirely used up

indium, and thallium have three electrons i think