It's elemental

No need to be judgmental or accidental

Use your mental methodically

Periodically set an electron free

Now I’m charged positively

It’s me Mr. B-E-A-R-D

So there's 90 elements

That occur naturally

And radioactive decay

The rest are made artificially

Mendeleev through the scientific method

Had realized the heart of chemistry

He knew undiscovered elements existed

To fill the gaps like he had predicted

Other scientists persisted

To keep the table unrestricted