Too hard a question for me!

[Ninnynanny]

what do barium, calcium, chlorine, magnesium, potassium, sodium and strontium have in common? Thank you for any ideas.

[NoMercy]

They all contain the letter i.

;-)

[boxtops]

I foraged, is this a quiz? the same question is on another site!

The answer is that Compounds of these elements among others are used in making fireworks.


http://en.wikipedia.o...rotechnic_composition

[Ninnynanny]

That was quick, Nomercy, thank you. What a simple answer, I was using encyclopedias to try and find the answer!!

[boxtops]

;-) nanny, they also all end in ~ium!

[NoMercy]

Apart from Chlorine.

[dividimus31]

All discovered by Humphrey Davy through electrolysis