Explain how an ionic compound forms from these elements and using the criss-cross rule
find their chemical formulas.

b i think it’s a water wheel turning in a stream

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock