How are electron shells filled in sodium?

What makes it possible for the continents to move? 18.6 grams of a solute with molecular mass of 8940 grams are dissolved in enough water to make 1.00 dm of solution at 25 àC What is the osmotic pressure of the solution? Was Germany ever considered a war and or combat zone after 1990 even for a short time? How many electrons would be in the outer valence ring of an atom of Aluminum? If a block of wood has a volume of 40 cubic cm and a mass of 30 grams what is its density? How does the ozone layer protect life from the suns rays? In order to increase the final momentum of a golf ball you could? If you put your hand over a stove is that radiation? What Longitude latitude equator and the prime meridian are all parts of? Why does a picked lettuce become limp when left in the sun? Is it legal to grow to cannabis plants at home? Which ruler is more precise-metric or non-metric? Is warming up your car a good thing to do? How are photoautotrophs and photoheterotrophs? How many pounds of ore equals one brick of goldwhich will weigh approximately 26 pounds? How the expansion of housing developments in southern California might limit coyote population in the area? Is a troodon herbivore? How many stomach herbivores have? What is rate of stirring? Why table salt becomes wet on exposure to air?