Little miss hydrogen
Sat on an ottoman
Crying and sighing all day.
Along came a neutron
Who said “How do you do, hon,
And why are you so sad today?”

“Alas,” she replied,
“I’ve nothing inside
But one lonely proton, that’s all.
With nary a neutron,
To balance my proton,
Among elements I’m the oddball.”

Neutron said, “Don’t be glum
We’ll make deuterium,
With a new mass of two and not one.”
So they joined without fuss
Into one nucleus,
And made an isotope fit for the sun.

Based on Little Miss Muffet
Learn more about Hydrogen