Can someone me find the element of the periodic table for radium the atomic number is 88 the symbol is ra the atomic mass is 226.025 solve this for me and round 226.025

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.