Who is famous for discoveries in radioactivity?

Particles vibrate in a rigid structure and do not move relative to their neighbors.

Which element would mostly likely have an electron affinity measuring closest to zero

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?