Atoms of which group in the periodic table have a valence shell electron configuration of ns2 np2? I tried 1 and 2 and it said they were wrong

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 ?