B 3-4 is the auto
If it’s needs
Answer:
It was the last element first discovered in nature, rather than by synthesis. Outside the laboratory, francium is extremely rare, with trace amounts found in uranium and thorium ores, where the isotope francium-223 continually forms and decays
True because if anything is moving it is in motion. And because horizontal is similar to projectile!
Noble gases:) they are very non-reactive
