the question in my paper was ; what is the electronic configuration of alkali metals halogens and noble gases i wrote alkali metals; 1s2, 2s1 halogens; 1s2 ,2s2,2p3 nobel gases; 1s2 2s2 2p4 is this answer correct

How many moles are equivalent to 55.5g of nano3

What diagram shows the ionic compound of magnesium oxide

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.