Helium does not react with any other substance. is it accurate to say that helium has no chemical properties?

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

hope this .

it's c. elements are placed in rows based on how may valencies electrons have.