How to do this question plz answer

Which other elements contain the same number of outer electrons as sodium

When would a bouncy ball have the most potential energy

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 ?