What are the formulae of barium nitrate, strontium sulfide, and beryllium iodide?

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What are the formulae of barium nitrate, strontium sulfide, and beryllium iodide?

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Answer 1 · 2016-09-25T16:02:59

$"Barium nitrate"$ $=$ $Ba(NO_3)_2$ ; $"strontium sulfide"$ $=$ $SrS$ ; $"Beryllium iodide"$ $=$ $BeI_2$ .

Explanation:

So you've got them all right save for $"Barium nitrate"$ $=$ $Ba(NO_3)_2$ . Barium is a Group 2 metal, and commonly forms the $Ba^(2+)$ ion; with the uninegative nitrate ion, $NO_3^-$ , it will form an electrically neutral salt with 2 equiv anion and 1 equiv of metal ion, i.e. $Ba^(2+)(NO_3^-)_2$ . Capisce?

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What are the formulae of barium nitrate, strontium sulfide, and beryllium iodide?

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