An alkaline earth
Atomic number 38 it be
When exposed to air
It goes yellow
A reaction all can see
Used in glass for Colour
TV’s and cathode rays
To prevent x ray emission
And for cancer its phase
Found in Nuclear waste alas
And it has been used
In toothpastes can you believe that
Some being abused
Those sensitive teeth
Saw Strontium
No wonder some gums bled
Strontium chloride hexahydrate
That is what I said
In 1957 Windscscale
Let some fly
560 years before its power
On earth will die
Its absorption is with calcium
If deficient you will find
Your body will take up
Strontium
Thats enough to blow anyones mind