Periodic Table, Group 2 & The Halogens AS & A Level
44) comes fro m the Group I element. Similarly to compound B, the sulfate io n is a -2 charge and Group I metals form ions wi th a +1 charge, thellowsn it fo that the fo rmula o f C is M 2 SO 4. So the relative atomic mass of the metal in compound B is 44 2 = 22. This matches closely to sodium which is 23, hence compound C is Na 2 SO 4. ................
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