0.0859g of compound X which contains a group II metal dissolves in water to produce colourless solution.

0.0859g of compound X which contains a group II metal dissolves in water to produce colourless solution. Excess acidified silver nitrate was the added and 0.308g of a white precipitate (Y) was formed.
A) identify y
B) write an ionic equation for the formation of y
C) use the data provided to identify the group 2 metal present in compound X
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