In the table below, there are descriptions of an experiment on samples of three different chemical elements. Decide whether the element is a metal or nonmetal, if you can. If there is not enough information to decide, choose can't decide in the third column.

$\backslash$table$[[$element$,$description,metal or nonmetal?$],[1,\backslash$table$[[$Element $1$ is a faintly yellow gas. $100c{m}^3$ of the gas are put into a$],[$sealed flask and heated gently. The pressure the gas exerts risestslowly$],[$as its temperature rises.$]],\backslash$table$[[$metal$],[$nonmetal$],[($can$\text{'}$t decide$)]]],[2.,\backslash$table$[[$Element $2$ is a hard silvery$-$gray solid. Wires are fastened to each side of$],[$a $2cm$ slab of it$,$ and an ordinary household $9V$ battery is hooked up so$],[$that it can feed electricity through the slab to an LED. The LED glows$],[$brightly$.]],\backslash$table$[[$metal$],[$nonmetal$],[($can$\text{'}$t decide$)]]],[3,\backslash$table$[[$Element $3$ is a shiny silvery$-$gray solid. Wires are fastened to each side of$],[$a $2cm$ slab of it$,$ and an ordinary household $9$ V battery is hooked up so$],[$that it can feed electricity through the slab to an LED. The LED glows$],[$brightly$.]],\backslash$table$[[$metal$],[$nonmetal$],[($can$\text{'}$t decide$)]]]]$