Which of these would have lowest kinetic energy Boiling water
Ice water
Refrigerated water
Water at room temperature

Iced water.

Explanation:

It's a solid. Within a given substance, such as water, particles in the solid state have the least amount of kinetic energy.

As water freezes, it does so because after thermal energy leaves the particles, the average translational+rotational kinetic energy decreases, but the total average kinetic energy does not... and the temperature does not change either.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.