(These are not descriptions of any actual elements on our periodic table, but you should use reasoning that works with our periodic table.)

A scientist is testing three mystery elements. She is trying to figure out their placement on the periodic table. Here is what she knows about them:


Element X: Does not conduct electricity, reacts with hydrogen in a 1:2 ratio, has the highest atomic weight of the three elements

Element Y: Does not conduct electricity, reacts with hydrogen in 1:3 ratio, has the lowest atomic weight of the three elements

Element Z: Conducts electricity, reacts with hydrogen in a 1:3 ratio, has the mid-level atomic weight of the three elements
—------------------------------------------------------------------------------------------------------------------------

How should she arrange these three elements relative to each other on the periodic table?
You may want to draw your answer for clarity. Explain your reasoning for placement using words like left, right, above, and below.