How many valence electrons do you have left? (Lewis dot structure SeF4)
F
/
F-Se-F
/
F

Which best describes why nh4+ can form an ionic bond with ci-?

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

All of the following are part of the biosphere except