Which of these gaseous elements is LEAST reactive? a. hydrogen

b. helium

c. nitrogen

d. oxygen

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

The p sub shell can hold up to 8 electrons in an atom. true or false?

What is the mass of 0.46 mil of mgcl2