Why is this noble gas electron configuration for sodium incorrect? [He]2s22p63s1
the second 2,the 6 and the 1 are exponents. please help!

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

What is the mass of 4 molecules of co2

What is the main reason why some developing countries fear the increase the free trade policies around the world?