Of the elements fe, hg, u,te, and y, which is considered a group a, element?

If you are referring to group 1A or also known as the first group on the periodic table. Non of these elements would be considered to be in that group.

Well to my expert knowledge and my exquisite calculations i think the the negative ion # 412 is the key to sucess

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)