Your answer is D Uranus because that's the only planet that rotates on its side besides that I'm going to say D.
I do not have my reference table out to see the periodic table but in order to achieve the answer pull out the periodic table. You now know that this element is going to be a metal because it is a good conductor of electric and is malleable. Next you will find both cesium and radon and look in between them to see which one is a metal that has an atomic number that lies between both radon and cesium
Answer:
well it is because of mainly what we call reaction the petrol are highly reactive with the flames
