? Match the atoms to their correct electron configuration. You can refer to the periodic table to do so. Drag the items on the left to the correct location on the right. fluorine (F) (Ar) 452 sodium (Na) 152252 2ps helium (He) [Ne] 3s calcium (Ca) 152 2s22p nitrogen (N) [Ne] 352 3p4 sulfur (5) 152​

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.