Answer: From highest to lowest, we have Iron> water> hydrogen
Explanation: Condensation temperature is temperature at which materials transit from being a vapor to being a solid.The early solar nebula consisted of water, iron and hydrogen, and the temperature in the nebula is said to decrease with distance away from the proto-sun, with heavy elements such as iron whose distance is nearer to the protosun, will have a higher condensation temperature as compared to light elements, such as hydrogen which have lower temperature since gases are further from the sun. water vapour is heavier than hydrogen and therefore will have a higher condensation temperature than hydrogen.
I believe it is "They have hydroxide ions" because bases are usually made up of hydroxide ions and other element ions.
You forgot one...and that happens to be the answer---> Accuracy
