It's elemental
No need to be judgmental or accidental
Use your mental methodically
Periodically set an electron free
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
The ones in purple are synthetic.
Atoms of elements that loose one electron gain a positive charge and are called cations.
Talking about Dmitri Mendeleev
Dmitri Ivanovich Mendeleev was a Russian scientist who came up with the idea and made the 1st Periodic Table.
Spells out his name. letting everyone one know it is him.