PLSSSS HELP I GET IT THAT I DONT GET IT

I'm pretty sure that water is made up of 2 different types of atoms.

Explanation:

Water is made up of Hydrogen and Oxygen Which are you're 2 types of Atoms (H20) Water is made up of 3 total elements, 2 Hydrogen Atoms and 1 Oxygen Atom. It's a tricky question but I hope this helps.

The most chemically active metals appear in the lower left-hand region of the periodic table, and the most chemically active nonmetals appear in the upper right-hand region. The properties of the semimetals, or metalloids, lie between those of the metals and the nonmetals.