Five of them — hydrogen, nitrogen ... sodium chloride). You can find a diatomic molecule everywhere. Some other elements can form diatomic molecules, but the bonds are very weak and unstable.

They react rapidly (very fast) with water, producing an alkaline solution and hydrogen gas ... They exist as diatomic molecules - they have two atoms in each molecule. As you go down the group ...

They react rapidly (very fast) with water, producing an alkaline solution and hydrogen gas ... They exist as diatomic molecules - they have two atoms in each molecule. As you go down the group ...