All the members of a certain family of elements are soft, silver-coloured conductors of electricity that react violently with water and form ions with a 1+ charge. the family name for this group of elements is:

The correct answer is the Alkali Metals

The further away they are in the periodic system of elements, the more violent the reaction will be with water. An easy way to see this is if you put a very small piece of it into a petri dish filled with water, and you will see that the part of the small metal starts moving rapidly around the water until it disappears completely.

It would be (at) + cu (s)