So, we have beryllium in the first case here, it has four electrons, that's how we know it's beryllium, boron has five electrons.

And we have the knowledge needed to prevent beryllium -related disease from occurring in the future.

Look at beryllium 2 plus, very tiny, charge plus two.

He had never expected that working around "a little beryllium" would someday destroy his lungs.

However, U. S. reserves total several million tons, and they are now available as a source of beryllium.